| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:CommonStockValue | █▇▇▇▇▆▆▆▆▆▆▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▁▄▄▄▄▄▄▄▄ | 0.007 | 0.006 | 0.006 | 0.006 | 0.006 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.004 | 0.004 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.002 | 0.002 | 0.002 | 0.001964 | 0.00187 | 0.001407 | 0.001152 | 0.001135 | 0.000921 | 0.000835 | 0.000629 | 0.000556 | 3.4e-05 | 0.003412 | 0.003262 | 0.003262 | 0.003262 | 0.00325 | 0.003291 | 0.003236 | 0.003068 |
| us-gaap:SharesOutstanding us-gaap:StatementClassOfStock us-gaap:SeriesAPreferredStock | NA | NA | 0.000194 | NA | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.001694 | 0.001694 | NA | NA | NA | 0.001694 | 0.001694 | 0.001694 | NA | 0.001694 | NA | NA | NA | 0.005694 | NA | NA | NA | 0.017 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:SharesOutstanding us-gaap:StatementClassOfStock us-gaap:SeriesBPreferredStock | NA | NA | 3.581119 | NA | 3.581119 | 3.581119 | 3.581119 | 3.581119 | 5.854845 | 5.854845 | 5.854845 | 5.854845 | 6.127692 | 7.378241 | 7.378241 | NA | NA | NA | 7.946673 | 7.946673 | 11.368633 | NA | 0.0 | NA | NA | NA | 0.0 | NA | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock | NA | NA | 146.874917 | NA | 146.43481 | 126.823156 | 126.411808 | 126.19299 | 123.820508 | 123.395113 | 123.415576 | 97.425721 | 92.741672 | 89.605417 | 73.164914 | NA | NA | NA | 62.248074 | 61.948389 | 58.388905 | 48.516528 | 48.54772 | 47.807398 | 47.140195 | 44.871888 | 33.750188 | NA | NA | NA | 20.023958 | NA | NA | NA | 0.818806 | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted | ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▇▇▁▇▆▅▁▄▄▃ | 0.153751 | 0.14737 | 0.146738 | 0.146492 | 0.133162 | 0.126568 | 0.126273 | 0.124035 | 0.123567 | 0.123415 | 0.119085 | 0.095077 | 0.090236 | 0.08435 | 0.072794 | 0.063332 | 0.062457 | 0.062286 | 0.06213 | 59.113 | 51.081519 | 48.547534 | 0.047912 | 47.271593 | 45.082176 | 37.678662 | 0.028271 | 26.632908 | 24.137782 | 20.798229 | NA | 14.152052 | 6.241327 | 0.818806 | NA | 78.293095 | 0.782931 | 0.781367 | NA | 78.299552 | NA | NA |
| us-gaap:EarningsPerShareBasic | ▄ | -0.53 | NA | NA | NA | -0.47 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:EarningsPerShareDiluted | ▄ | -0.53 | NA | NA | NA | -0.47 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:EarningsPerShareBasicAndDiluted | NA | -0.51 | -0.47 | -0.4 | -0.47 | -0.55 | -0.5 | -0.4 | -0.38 | -0.3 | -0.27 | -0.36 | -0.34 | -0.31 | -0.36 | -0.35 | -0.37 | -0.33 | -0.25 | -1.15 | -0.23 | -0.14 | -0.18 | -0.16 | -0.14 | -0.14 | -0.17 | -0.11 | -0.09 | -0.11 | -1.5000000000000002 | -0.66 | -0.01 | 1.28 | 0.049999999999999996 | -0.01 | -0.0 | 0.07 | -0.11000000000000001 | -0.07 | -0.15 | -0.01 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
|---|
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
|---|
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AllocatedShareBasedCompensationExpense | NA | NA | NA | 0.0 | NA | NA | NA | 0.1 | NA | NA | NA | 0.1 | NA | NA | NA | NA | NA | 0.0 | NA | NA | 4.5 | 1.5 | NA | NA | 1.3 | 1.017308 | NA | NA | 0.438951 | 0.90165 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:EmployeeStockOption | NA | 16.7 | NA | 10.7 | 10.5 | 9.3 | 5.3 | 6.5 | 6.4 | 5.8 | 5.2 | 5.4 | 5.2 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 0.658512 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName iova:TwoThousandTwentyEspp | █▁ | 0.5 | 0.3 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:ComprehensiveIncomeNetOfTax | ▁▂▂▃▃▂▃▄▄▅▅▅▅▆▆▆▆▆▇▇▇█▇██████ | -81.414 | -75.372 | -68.533 | -58.733 | -63.613 | -68.903 | -63.587 | -49.62 | -47.317 | -36.77 | -32.497 | -33.947 | -30.663 | -26.515 | -25.854 | -22.149 | -23.379 | -20.711 | -15.822 | -18.673 | -11.553 | -6.864 | -8.367 | -7.597 | -6.345786 | -5.298 | -4.867 | -2.798 | -2.110169 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:GeneralAndAdministrativeExpense | ██▇▆▆▆▄▄▄▄▃▃▃▃▃▂▂▂▂▄▃▁▂▁▁▁ | 19.307 | 19.621 | 16.083 | 15.916 | 14.353 | 13.858 | 10.872 | 10.029 | 10.867 | 9.081 | 7.525 | 7.113 | 6.827 | 6.965 | 8.485 | 4.59 | 3.928 | 4.259 | 5.085 | 10.498 | 7.264 | 2.818 | 4.422 | 2.683 | 2.385 | 2.9 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:NetIncomeLoss | ▁▁▂▃▃▂▂▄▄▅▅▅▅▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇██▇▇▇████▇▇▇▇█ | -81.351 | -75.449 | -68.397 | -58.571 | -63.018 | -69.595 | -63.568 | -49.487 | -47.551 | -36.95 | -32.575 | -33.83 | -30.66 | -26.515 | -25.854 | -22.149 | -23.377 | -20.684 | -15.689 | -18.758 | -11.563 | -6.884 | -8.36 | -7.635 | -6.36749 | -5.298059 | -4.651 | -2.79831 | -2.110169 | -2.259514 | -11.496516 | -9.409063 | -3.429255 | -1.046529 | 3.466241 | -0.673896 | -0.327284 | -5.772679 | -8.351586 | -5.818478 | -10.959741 | -0.741922 |
| us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings | ▁▂▃▄▃▃▃▅▅▇▇▇▇█ | -81.351 | -75.449 | -68.397 | -58.571 | -63.018 | -69.595 | -63.568 | -49.487 | -47.551 | -36.95 | -32.575 | -33.83 | -30.66 | -26.515 | NA | NA | NA | NA | -15.688 | -18.759 | -11.563 | -6.884 | -8.377 | -7.61745 | -6.367491 | -5.298059 | NA | NA | NA | NA | NA | NA | NA | -1.046529 | 3.466241 | -0.673897 | -0.327284 | -5.772679 | -8.351586 | -5.818478 | NA | NA |
| us-gaap:OperatingExpenses | █▇▇▆▆▇▇▅▅▄▄▄▄▃▃▃▃▃▂▃▂▂▂▂▂▁▁▁▁▁▂▂▁▁▁▁▁▁▁▁▂▁ | 81.426 | 75.57 | 68.534 | 58.966 | 63.627 | 70.81 | 65.11 | 51.611 | 50.165 | 39.986 | 34.943 | 35.06 | 31.378 | 26.877 | 26.071 | 22.343 | 23.581 | 20.882 | 15.922 | 18.979 | 11.727 | 7.01 | 8.454 | 7.643 | 6.440225 | 5.298059 | 4.868185 | 2.8025 | 2.110169 | 2.259514 | 11.49753 | 9.409063 | 1.02926 | 0.704913 | 1.722706 | 1.627636 | 1.646425 | 3.136133 | 4.184743 | 5.814141 | 10.561185 | 0.496077 |
| us-gaap:OperatingIncomeLoss | ▁▂▂▃▃▂▂▄▄▅▅▅▅▆▆▆▆▆▇▆▇▇▇▇▇█████▇▇████████▇█ | -81.426 | -75.57 | -68.534 | -58.966 | -63.627 | -70.81 | -65.11 | -51.611 | -50.165 | -39.986 | -34.943 | -35.06 | -31.378 | -26.877 | -26.071 | -22.343 | -23.581 | -20.882 | -15.922 | -18.979 | -11.727 | -7.01 | -8.454 | -7.643 | -6.440225 | -5.298 | -4.868185 | -2.8025 | -2.110169 | -2.259514 | -11.49753 | -9.409063 | -1.02926 | -0.704913 | -1.722706 | -1.627636 | -1.646425 | -3.136133 | -4.184743 | -5.814141 | -10.561185 | -0.496077 |
| us-gaap:ResearchAndDevelopmentExpense | █▇▇▆▇▇▇▆▅▄▄▄▄▃▃▃▃▃▂▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 62.119 | 55.949 | 52.451 | 43.05 | 49.274 | 56.952 | 54.238 | 41.582 | 39.298 | 30.905 | 27.418 | 27.947 | 24.551 | 19.912 | 17.586 | 17.753 | 19.653 | 16.623 | 10.837 | 8.481 | 4.463 | 4.192 | 3.323 | 4.983 | 4.055688 | 2.011033 | 1.686829 | 0.353879 | 0.361227 | 0.302662 | 0.559367 | 0.25 | 0.25 | 0.27 | 0.25 | 0.25 | 0.27 | 0.886 | 1.755561 | 0.0 | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
|---|
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:Assets | █▇▇▇█▃▄▄▅▅▅▃▃▄▂▂▂▂▂▂▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 852.79 | 750.573 | 768.458 | 782.294 | 817.567 | 288.298 | 344.655 | 395.746 | 435.924 | 461.502 | 480.821 | 270.834 | 284.751 | 307.248 | 155.373 | 173.97 | 138.012 | 155.389 | 171.886 | 182.325 | 193.542 | 100.768 | 105.653 | 112.224 | 114.739592 | 113.537586 | 46.506847 | 17.416876 | 18.535342 | 18.082596 | 19.873649 | 0.168626 | 0.597749 | 0.028333 | 0.029413 | 0.028692 | 0.065611 | 0.076847 | 0.56843 | 3.438596 | 0.466166 | 1.460952 |
| us-gaap:Liabilities | █▇█▅▄▃▃▃▃▂▁ | 108.377 | 103.142 | 111.96 | 70.453 | 59.258 | 44.985 | 45.684 | 40.683 | 38.502 | 26.57 | 14.628 | NA | NA | NA | 9.892 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LiabilitiesAndStockholdersEquity | █▇▇▇█▃▄▄▅▅▅▃▃▄▂▂▂▂▂▂▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 852.79 | 750.573 | 768.458 | 782.294 | 817.567 | 288.298 | 344.655 | 395.746 | 435.924 | 461.502 | 480.821 | 270.834 | 284.751 | 307.248 | 155.373 | 173.97 | 138.012 | 155.389 | 171.886 | 182.325 | 193.542 | 100.768 | 105.653 | 112.224 | 114.739592 | 113.537586 | 46.506847 | 17.416876 | 18.535342 | 18.082596 | 19.873649 | 0.168626 | 0.597749 | 0.028333 | 0.029413 | 0.028692 | 0.065611 | 0.076847 | 0.56843 | 3.438596 | 0.466166 | 1.460952 |
| us-gaap:StockholdersEquity | █▇▇██▃▄▄▅▅▅▃▄▄▂▃▂▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 744.413 | 647.431 | 656.498 | 711.841 | 758.309 | 243.313 | 298.971 | 355.063 | 397.422 | 434.932 | 466.193 | 254.16 | 270.569 | 292.558 | 145.481 | 165.441 | 129.152 | 149.886 | 166.918 | 179.131 | 188.936 | 98.938 | 104.023 | 109.369 | 112.873396 | 111.626869 | 44.845087 | 16.158187 | 17.37887 | 16.806053 | 17.603717 | -3.340459 | -2.771322 | -12.278619 | -11.319476 | -16.581601 | -16.618362 | -17.258451 | -12.780918 | -5.690725 | -1.403945 | 0.638085 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AssetsCurrent | ▇▆▇▇█▃▄▄▅▅▅▃▄▄▂▃▂▂▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 666.64 | 605.218 | 636.1 | 723.59 | 782.654 | 256.381 | 316.493 | 367.307 | 410.938 | 444.753 | 475.374 | 265.863 | 279.781 | 302.726 | 149.29 | 171.375 | 135.434 | 152.593 | 169.512 | 180.556 | 192.35 | 99.359 | 103.977 | 110.391 | 112.714536 | 111.409326 | 44.975281 | 17.230812 | 18.519571 | 18.067968 | 19.845893 | 0.138682 | 0.578716 | 0.00815 | 0.007275 | 0.005 | 0.024367 | 0.03405 | 0.524081 | 3.298108 | 0.326065 | 1.300916 |
| us-gaap:CashAndCashEquivalentsAtCarryingValue | ▃▄▃▃▅▂▁▂▃▂▃▃▇█▄▅▄▄▄▃▃▁▁▁▁▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 82.763 | 131.954 | 67.329 | 68.31 | 160.614 | 52.54 | 13.969 | 38.889 | 76.912 | 54.093 | 82.152 | 80.738 | 246.017 | 297.082 | 145.373 | 163.38 | 114.285 | 107.099 | 106.717 | 92.895 | 101.222 | 8.943 | 13.642 | 10.21 | 12.55629 | 111.280443 | 44.909147 | 17.189671 | 18.440361 | 17.943877 | 19.672177 | 0.129804 | 0.56958 | 0.0 | 0.0 | 0.0 | 0.015739 | 0.0 | 0.510217 | 0.910608 | 0.268565 | 1.292469 |
| us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents | ▃▅▃▃▆▂▁▂▃▂▃▃█ | 88.847 | 138.038 | 72.854 | 73.835 | 166.139 | 58.065 | 19.419 | 44.339 | 82.362 | 54.093 | 82.152 | 80.738 | 246.017 | NA | 145.373 | NA | NA | NA | 106.717 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:ShortTermInvestments | ▇▅▇█▇▁▃ | 573.605 | 472.203 | 562.108 | 645.838 | 611.265 | 193.112 | 293.112 | NA | NA | NA | 386.371 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:PrepaidExpenseAndOtherAssetsCurrent | ▇█▅▇██▇▄▅▄▅▅▃▄▃▆▅▄▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 10.272 | 11.288 | 6.663 | 9.442 | 10.775 | 10.729 | 9.412 | 5.433 | 6.785 | 4.735 | 6.851 | 5.863 | 3.682 | 5.644 | 3.917 | 7.995 | 6.417 | 5.396 | 3.042 | 1.274 | 0.782 | 0.193 | 0.277 | 0.245 | 0.378409 | 0.128883 | 0.066134 | 0.015074 | 0.009744 | 0.01 | 0.015 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.008628 | 0.03405 | 0.013864 | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:PropertyPlantAndEquipmentGross | █▆▁ | 86.436 | 78.7 | 64.737 | NA | NA | NA | 13.034 | NA | NA | NA | 6.643 | NA | NA | NA | 5.483 | 5.386 | 5.123 | 5.098 | 4.455 | NA | NA | NA | 2.779 | 2.627 | NA | NA | 1.635789 | NA | NA | NA | 0.043758 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | █▅▁ | 6.316 | 5.95 | 5.578 | NA | NA | NA | 4.498 | NA | NA | NA | 3.96 | NA | NA | NA | 3.033 | 2.791 | 2.545 | 2.302 | 2.081 | NA | 0.001643 | 1.372 | 1.103 | 0.794 | 0.529866 | 0.289672 | 0.104223 | 0.038782 | 0.03373 | 0.032567 | 0.016002 | 0.013814 | 0.01202 | 0.01087 | 0.008915 | 0.007361 | 0.005809 | 0.004257 | 0.002704 | 0.001513 | 0.000595 | 0.0 |
| us-gaap:PropertyPlantAndEquipmentNet | █▇▆▄▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 80.12 | 72.75 | 59.159 | 39.112 | 18.726 | 13.607 | 8.536 | 5.856 | 4.472 | 3.504 | 2.683 | 2.64 | 2.706 | 2.247 | 2.45 | 2.595 | 2.578 | 2.796 | 2.374 | 1.769 | 1.192 | 1.409 | 1.676 | 1.833 | 2.025056 | 2.12826 | 1.531566 | 0.17099 | 0.015771 | 0.014628 | 0.027756 | 0.029944 | 0.019033 | 0.020183 | 0.022138 | 0.023692 | 0.025244 | 0.026797 | 0.028349 | 0.018803 | 0.016299 | 0.0 |
| us-gaap:LongTermInvestments | █▁ | 46.288 | 10.227 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OperatingLeaseRightOfUseAsset | ███▂▂▂▂▃▂▂▁ | 52.508 | 55.131 | 54.756 | 10.682 | 7.48 | 9.305 | 10.695 | 13.738 | 11.719 | 9.957 | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OtherAssetsNoncurrent | ▁▁█▂▂▂▂▂▂▂▂▂▂▂▂ | 1.15 | 1.163 | 12.918 | 3.385 | 3.182 | 3.48 | 3.481 | 3.395 | 3.345 | 3.288 | 2.764 | 2.331 | 2.264 | 2.275 | 3.633 | NA | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AccountsPayableCurrent | ▇▅▅█▄▄▅▄▅▃▂▃▂▃▁▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 21.914 | 13.369 | 13.513 | 24.794 | 10.238 | 10.614 | 15.567 | 9.921 | 12.782 | 7.589 | 2.739 | 6.014 | 5.196 | 6.576 | 1.232 | 2.905 | 3.695 | 2.174 | 0.863 | 0.228 | 0.725 | 1.054 | 0.958 | 1.161 | 1.156922 | 1.10737 | 1.248413 | 0.573801 | 0.44055 | 0.286325 | 0.412976 | 1.550865 | 1.480851 | 1.291718 | 1.098271 | 0.841616 | 0.609266 | 0.504252 | 0.190048 | 0.206864 | 0.130638 | 0.030292 |
| us-gaap:AccruedLiabilitiesCurrent | ▇▇▇▇█▅▄▄▃▂▃▃▃▂▃▂▂▂▂▁▂▁▁▁▁▁▁ | 34.192 | 35.774 | 35.074 | 32.4 | 38.794 | 22.5 | 16.265 | 16.322 | 13.57 | 8.489 | 11.659 | 10.66 | 8.986 | 8.114 | 8.66 | 5.624 | 5.165 | 3.329 | 4.105 | 2.966 | 3.881 | 0.69 | 0.586 | 1.608 | 0.623774 | 0.717847 | 0.327847 | NA | NA | NA | 1.518225 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LiabilitiesCurrent | █▇▇█▇▅▅▅▅▃▂▃▂▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▃▃▃▂▂▁▁ | 60.534 | 55.059 | 54.871 | 64.39 | 54.905 | 39.545 | 39.084 | 34.613 | 33.836 | 22.137 | 14.398 | 16.674 | 14.182 | 14.69 | 9.892 | 8.529 | 8.86 | 5.503 | 4.968 | 3.194 | 4.606 | 1.83 | 1.63 | 2.855 | 1.866196 | 1.910717 | 1.66176 | 1.258689 | 1.156472 | 1.109486 | 2.269932 | 3.509085 | 3.369071 | 12.306952 | 11.348889 | 16.610293 | 16.683973 | 17.335298 | 13.349348 | 9.129321 | 1.870111 | 0.822867 |
| us-gaap:OperatingLeaseLiabilityCurrent | ▅▆▆▇▆▆▇█▇▆▁ | 4.428 | 5.916 | 6.284 | 7.196 | 5.873 | 6.431 | 7.252 | 8.37 | 7.484 | 6.059 | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OtherAccruedLiabilitiesCurrent | ▆▆▆█▇▆▆▆▄▃▂▂▂▂▂▂▁▁▁ | 1.793 | 1.718 | 1.712 | 2.314 | 2.085 | 1.675 | 1.657 | 1.521 | 0.98 | 0.882 | 0.489 | 0.459 | 0.388 | 0.478 | 0.496 | 0.286 | 0.087 | 0.114 | 0.124 | NA | NA | NA | 0.147 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 0.616 | 0.616 | 0.866 | 0.0 | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:LiabilitiesNoncurrent | ▇▇█▂▂▂▂▂▂▂▁ | 47.843 | 48.083 | 57.089 | 6.063 | 4.353 | 5.44 | 6.6 | 6.07 | 4.666 | 4.433 | 0.23 | NA | NA | NA | 0.297 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OtherLiabilitiesNoncurrent | NA | NA | 11.714 | 2.352 | 2.352 | 2.352 | 2.352 | 0.053 | 0.053 | 0.053 | 0.23 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:OperatingLeaseLiabilityNoncurrent | ███▂▁▁▂▂▂▂▁ | 46.843 | 47.083 | 45.375 | 3.711 | 2.001 | 3.088 | 4.248 | 6.017 | 4.613 | 4.38 | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | ▅▅█▁ | 4.423 | 4.423 | 6.063 | 2.018 | NA | NA | NA | 6.514 | 4.589 | NA | 0.004589 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree | ███▁ | 4.516 | 4.516 | 4.286 | 0.265 | NA | NA | NA | 0.001987 | 0.001412 | NA | 0.001412 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour | ███▁ | 4.372 | 4.372 | 4.375 | 0.273 | NA | NA | NA | 0.000131 | 0.000144 | NA | 0.000144 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive | NA | NA | 4.281 | NA | NA | NA | NA | NA | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive us-gaap:LeaseContractualTerm iova:FacilityLeases | NA | NA | 4.281 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive | NA | NA | 74.206 | NA | NA | NA | NA | NA | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap:LeaseContractualTerm iova:FacilityLeases | NA | NA | 74.206 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:StockholdersEquity | █▇▇██▃▄▄▅▅▅▃▄▄▂▃▂▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 744.413 | 647.431 | 656.498 | 711.841 | 758.309 | 243.313 | 298.971 | 355.063 | 397.422 | 434.932 | 466.193 | 254.16 | 270.569 | 292.558 | 145.481 | 165.441 | 129.152 | 149.886 | 166.918 | 179.131 | 188.936 | 98.938 | 104.023 | 109.369 | 112.873396 | 111.626869 | 44.845087 | 16.158187 | 17.37887 | 16.806053 | 17.603717 | -3.340459 | -2.771322 | -12.278619 | -11.319476 | -16.581601 | -16.618362 | -17.258451 | -12.780918 | -5.690725 | -1.403945 | 0.638085 |
| us-gaap:CommonStockValue | █▇▇▇▇▆▆▆▆▆▆▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▁▄▄▄▄▄▄▄▄ | 0.007 | 0.006 | 0.006 | 0.006 | 0.006 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.004 | 0.004 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.002 | 0.002 | 0.002 | 0.001964 | 0.00187 | 0.001407 | 0.001152 | 0.001135 | 0.000921 | 0.000835 | 0.000629 | 0.000556 | 3.4e-05 | 0.003412 | 0.003262 | 0.003262 | 0.003262 | 0.00325 | 0.003291 | 0.003236 | 0.003068 |
| us-gaap:AdditionalPaidInCapital | █▇▇▇▇▅▅▁▁▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁ | 1731.363 | 1552.968 | 1486.662 | 1473.472 | 1461.207 | 882.599 | 869.354 | 0.239 | 0.372 | 844.789 | 838.984 | 594.455 | 576.917 | 568.243 | 394.651 | 388.756 | 330.318 | 327.673 | 323.994 | 320.14 | 311.268 | 209.729 | 207.95 | 204.929 | 200.832015 | 193.239795 | 121.160415 | NA | NA | NA | 81.884897 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RetainedEarningsAccumulatedDeficit | ▁▂▂▃▃▃▄▄▅▅▅▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇███████████████ | -986.993 | -905.642 | -830.193 | -761.796 | -703.225 | -640.207 | -570.612 | -507.044 | -457.557 | -410.006 | -372.76 | -340.185 | -306.355 | -275.695 | -249.18 | -223.326 | -201.177 | -177.8 | -157.116 | -141.428 | -122.669 | -111.106 | -104.222 | -95.845 | -88.227444 | -81.859953 | -76.561894 | -71.695179 | -68.896868 | -66.786699 | -64.527185 | -44.569042 | -35.159979 | -31.730724 | -30.684195 | -34.150436 | -33.476539 | -33.149255 | -27.376576 | -19.02499 | -13.206512 | -1.682476 |
| us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax | ▁▁▁▁▁▁▁██▁▁▁▁ | 0.033 | 0.096 | 0.019 | 0.155 | 0.317 | 0.912 | 0.22 | 861.859 | 854.596 | 0.138 | -0.042 | -0.12 | -0.003 | NA | 0.0 | 0.0 | 0.0 | 0.002 | 0.029 | 0.163 | 0.078 | 0.068 | 0.048 | NA | 0.021704 | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:StockIssuedDuringPeriodValueNewIssues | ▃▂▁▁█ | 160.27 | 42.885 | 0.0 | 0.043 | 567.0 | NA | NA | NA | NA | NA | 236.724 | 0.0 | 0.001 | 162.092 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 0.067919 | NA | NA | NA | NA |
| us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | ▇█▄▅▅▄▂▂▂▂▂▂▂▁ | 14.414 | 16.941 | 10.12 | 10.706 | 10.537 | 9.412 | 5.407 | 6.598 | 6.426 | 5.846 | 5.185 | 5.516 | 5.222 | 4.104 | NA | NA | NA | NA | 3.123 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInOperatingActivities | ▂▁▁▄▅▁▃▄▅▆▅▆▆▇▇▇▇▇█ | -54.008 | -62.391 | -62.692 | -40.515 | -36.635 | -65.292 | -53.822 | -42.182 | -33.795 | -29.09 | -31.549 | -27.928 | -23.923 | -17.849 | -20.964 | -21.446 | -17.496 | -18.803 | -12.159 | NA | NA | NA | NA | NA | NA | NA | NA | -1.728763 | -1.322191 | -2.267363 | -2.25319 | -0.427072 | -0.68193 | -0.3 | 0.0 | -0.280739 | -1.20051 | -0.760217 | -2.709654 | -1.649502 | -1.265568 | -0.369592 |
| us-gaap:NetCashProvidedByUsedInInvestingActivities | ▅█▇▆▁█▇▇▇▇▄▅▆▇▇▇▇▇▇ | -159.165 | 77.211 | 58.753 | -52.955 | -423.756 | 100.105 | 26.814 | 3.495 | 58.683 | 1.033 | -206.382 | -149.373 | -30.502 | -0.022 | 0.058 | 14.487 | 25.33 | 18.802 | 25.765 | NA | NA | NA | NA | NA | NA | NA | NA | -0.160272 | -0.002305 | -0.003437 | -1e-06 | -0.012704 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.060737 | -0.003455 | 0.033139 | 0.002981 |
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▃▂▁▁█▁▁▁▁▁▄▁▁▃▁▂▁▁▁ | 163.982 | 50.364 | 2.958 | 1.166 | 568.465 | 3.833 | 2.088 | 0.664 | 3.381 | -0.002 | 239.345 | 12.022 | 3.36 | 169.58 | 2.899 | 56.054 | -0.648 | 0.383 | 0.216 | NA | NA | NA | NA | NA | NA | NA | NA | 0.638345 | 1.82098 | 0.5425 | 21.795563 | 0.0 | 1.25151 | 0.3 | 0.0 | 0.265 | 1.21625 | 0.25 | 2.37 | 2.295 | 0.778 | 0.863137 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:DepreciationDepletionAndAmortization | ██▅▄▂▁▃▅▃▂▁▁ | 0.366 | 0.372 | 0.321 | 0.307 | 0.26 | 0.252 | 0.294 | 0.315 | 0.289 | 0.271 | 0.252 | 0.251 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:IncreaseDecreaseInAccountsPayable | ▅▄▁█▄▂▅▃▅▅▃▄▄▅▄▄▄▄▄▄▄▄ | 4.965 | -0.015 | -12.132 | 16.264 | 0.672 | -7.768 | 6.081 | -3.326 | 5.369 | 4.582 | -3.275 | 1.096 | -1.553 | 5.239 | -1.779 | -0.839 | 1.521 | 1.466 | 0.48 | -0.497 | -0.329 | 0.096 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:NetCashProvidedByUsedInOperatingActivities | ▂▁▁▄▅▁▃▄▅▆▅▆▆▇▇▇▇▇█ | -54.008 | -62.391 | -62.692 | -40.515 | -36.635 | -65.292 | -53.822 | -42.182 | -33.795 | -29.09 | -31.549 | -27.928 | -23.923 | -17.849 | -20.964 | -21.446 | -17.496 | -18.803 | -12.159 | NA | NA | NA | NA | NA | NA | NA | NA | -1.728763 | -1.322191 | -2.267363 | -2.25319 | -0.427072 | -0.68193 | -0.3 | 0.0 | -0.280739 | -1.20051 | -0.760217 | -2.709654 | -1.649502 | -1.265568 | -0.369592 |
| us-gaap:NetIncomeLoss | ▁▁▂▃▃▂▂▄▄▅▅▅▅▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇██▇▇▇████▇▇▇▇█ | -81.351 | -75.449 | -68.397 | -58.571 | -63.018 | -69.595 | -63.568 | -49.487 | -47.551 | -36.95 | -32.575 | -33.83 | -30.66 | -26.515 | -25.854 | -22.149 | -23.377 | -20.684 | -15.689 | -18.758 | -11.563 | -6.884 | -8.36 | -7.635 | -6.36749 | -5.298059 | -4.651 | -2.79831 | -2.110169 | -2.259514 | -11.496516 | -9.409063 | -3.429255 | -1.046529 | 3.466241 | -0.673896 | -0.327284 | -5.772679 | -8.351586 | -5.818478 | -10.959741 | -0.741922 |
| us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings | ▁▂▃▄▃▃▃▅▅▇▇▇▇█ | -81.351 | -75.449 | -68.397 | -58.571 | -63.018 | -69.595 | -63.568 | -49.487 | -47.551 | -36.95 | -32.575 | -33.83 | -30.66 | -26.515 | NA | NA | NA | NA | -15.688 | -18.759 | -11.563 | -6.884 | -8.377 | -7.61745 | -6.367491 | -5.298059 | NA | NA | NA | NA | NA | NA | NA | -1.046529 | 3.466241 | -0.673897 | -0.327284 | -5.772679 | -8.351586 | -5.818478 | NA | NA |
| us-gaap:ShareBasedCompensation | ▇█▅▅▅▅▃▃▃▃▃▃▃▂▁▁▂▂▂▄▂▁▁ | 14.414 | 16.941 | 10.232 | 10.706 | 10.537 | 9.412 | 5.407 | 6.598 | 6.426 | 5.846 | 5.185 | 5.4 | 5.2 | 4.104 | 2.76 | 2.6 | 3.0 | 3.296 | 3.123 | 7.9 | 4.6 | 1.779 | 2.745 | NA | NA | 1.467753 | 1.093192 | 0.939283 | 0.91935 | 1.070707 | 0.389878 | 2.139927 | 0.087386 | 0.087386 | 12.096423 | 0.697671 | 0.469486 | 1.227227 | 6.712056 | 0.532511 | 9.211 | 0.114016 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInInvestingActivities | ▅█▇▆▁█▇▇▇▇▄▅▆▇▇▇▇▇▇ | -159.165 | 77.211 | 58.753 | -52.955 | -423.756 | 100.105 | 26.814 | 3.495 | 58.683 | 1.033 | -206.382 | -149.373 | -30.502 | -0.022 | 0.058 | 14.487 | 25.33 | 18.802 | 25.765 | NA | NA | NA | NA | NA | NA | NA | NA | -0.160272 | -0.002305 | -0.003437 | -1e-06 | -0.012704 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.060737 | -0.003455 | 0.033139 | 0.002981 |
| us-gaap:PaymentsToAcquirePropertyPlantAndEquipment | ▄▄█▆▃▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 9.616 | 10.705 | 23.335 | 17.844 | 4.975 | 0.637 | 3.426 | 1.234 | 1.433 | 0.824 | 0.295 | 0.463 | 0.418 | 0.022 | -0.058 | 0.263 | 0.025 | 0.798 | 0.74 | 0.725 | 0.054 | 0.002 | 0.151 | 0.072867 | 0.13699 | 0.782143 | 1.426016 | 0.160272 | 0.002305 | 0.003437 | 1e-06 | 0.012704 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.059369 | -0.003455 | -0.016861 | 0.002981 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▃▂▁▁█▁▁▁▁▁▄▁▁▃▁▂▁▁▁ | 163.982 | 50.364 | 2.958 | 1.166 | 568.465 | 3.833 | 2.088 | 0.664 | 3.381 | -0.002 | 239.345 | 12.022 | 3.36 | 169.58 | 2.899 | 56.054 | -0.648 | 0.383 | 0.216 | NA | NA | NA | NA | NA | NA | NA | NA | 0.638345 | 1.82098 | 0.5425 | 21.795563 | 0.0 | 1.25151 | 0.3 | 0.0 | 0.265 | 1.21625 | 0.25 | 2.37 | 2.295 | 0.778 | 0.863137 |
| us-gaap:ProceedsFromIssuanceOfLongTermDebt | ▁█ | 0.0 | 1.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
|---|
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 7000.0 | 6000.0 | 6000.0 | 6000.0 | 6000.0 | 5000.0 | 5000.0 | 5000.0 | 5000.0 | 5000.0 | 5000.0 | 4000.0 | 4000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 2000.0 | 2000.0 | 2000.0 | 1964.0 | 1870.0 | 1407.0 | 1152.0 | 1135.0 | 921.0 | 835.0 | 629.0 | 556.0 | 34.0 | 3412.0 | 3262.0 | 3262.0 | 3262.0 | 3250.0 | 3291.0 | 3236.0 | 3068.0 |
| Percentage of CommonStockValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.1 | 11.6 | 11.4 | 5.0 | 4.2 | 0.6 | 0.1 | 0.7 | 0.2 |
| Period End | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.000194 | 0.001694 | 0.001694 | 0.001694 | 0.001694 | 0.001694 | 0.001694 | 0.005694 | 0.017 |
| Percentage of SharesOutstanding | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 3.581119 | 3.581119 | 3.581119 | 3.581119 | 3.581119 | 5.854845 | 5.854845 | 5.854845 | 5.854845 | 6.127692 | 7.378241 | 7.378241 | 7.946673 | 7.946673 | 11 | 0.0 | 0.0 | 0.0 |
| Percentage of SharesOutstanding | 1845937.6 | 1845937.6 | 1845937.6 | 1845937.6 | 1845937.6 | 3017961.3 | 3017961.3 | 3017961.3 | 3017961.3 | 3158604.1 | 435551.4 | 435551.4 | 469107.0 | 469107.0 | 671111.7 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 146 | 146 | 126 | 126 | 126 | 123 | 123 | 123 | 97 | 92 | 89 | 73 | 62 | 61 | 58 | 48 | 48 | 47 | 47 | 44 | 33 | 20 | 0.818806 |
| Percentage of SharesOutstanding | 75708720.1 | 75481860.8 | 65372760.8 | 65160725.8 | 65047933.0 | 63825004.1 | 63605728.4 | 63616276.3 | 50219443.8 | 47804985.6 | 5289576.0 | 4319062.2 | 3674620.7 | 3656929.7 | 3446806.7 | 0.0 | 2865863.0 | 0.0 | 0.0 | 0.0 | 592732.5 | 117788.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-09-30 |
| Value | 0.153751 | 0.14737 | 0.146738 | 0.146492 | 0.133162 | 0.126568 | 0.126273 | 0.124035 | 0.123567 | 0.123415 | 0.119085 | 0.095077 | 0.090236 | 0.08435 | 0.072794 | 0.063332 | 0.062457 | 0.062286 | 0.06213 | 59 | 51 | 48 | 0.047912 | 47 | 45 | 37 | 0.028271 | 26 | 24 | 20 | 14 | 6.241327 | 0.818806 | 78 | 0.782931 | 0.781367 | 78 |
| Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | -0.53 | -0.47 |
| Percentage of EarningsPerShareBasic | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | -0.53 | -0.47 |
| Percentage of EarningsPerShareDiluted | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 |
| Value | -0.51 | -0.47 | -0.4 | -0.47 | -0.55 | -0.5 | -0.4 | -0.38 | -0.3 | -0.27 | -0.36 | -0.34 | -0.31 | -0.36 | -0.35 | -0.37 | -0.33 | -0.25 | -1.15 | -0.23 | -0.14 | -0.18 | -0.16 | -0.14 | -0.14 | -0.17 | -0.11 | -0.09 | -0.11 | -1.5 | -0.66 | -0.01 | 1.28 | 0.05 | -0.01 | 0 | 0.07 | -0.11 | -0.07 | -0.15 | -0.01 | -0.01 | -0.01 | 0 |
| Percentage of EarningsPerShareBasicAndDiluted | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-09-30 | 2019-09-30 | 2018-09-30 | 2017-03-31 | 2016-06-30 | 2016-03-31 | 2015-06-30 | 2015-03-31 | 2014-06-30 | 2014-03-31 |
| Value | 0.0 | 0.1 | 0.1 | 0.0 | 4.5 | 1.5 | 1.3 | 1.017308 | 0.438951 | 0.90165 |
| Percentage of AllocatedShareBasedCompensationExpense | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2014-12-31 |
| Value | 16 | 10 | 10 | 9.3 | 5.3 | 6.5 | 6.4 | 5.8 | 5.2 | 5.4 | 5.2 | 0.658512 |
| Percentage of AllocatedShareBasedCompensationExpense | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6500.0 | 0.0 | 0.0 | 0.0 | 5400.0 | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:EmployeeStockOption | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0.5 | 0.3 |
| Percentage of AllocatedShareBasedCompensationExpense | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues iova:TwoThousandTwentyEspp | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 |
| Value | -81414000.0 | -75372000.0 | -68533000.0 | -58733000.0 | -63613000.0 | -68903000.0 | -63587000.0 | -49620000.0 | -47317000.0 | -36770000.0 | -32497000.0 | -33947000.0 | -30663000.0 | -26515000.0 | -25854000.0 | -22149000.0 | -23379000.0 | -20711000.0 | -15822000.0 | -18673000.0 | -11553000.0 | -6864000.0 | -8367000.0 | -7597000.0 | -6345800.0 | -5298000.0 | -4867000.0 | -2798000.0 | -2110200.0 |
| Percentage of ComprehensiveIncomeNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | 19 | 19 | 16 | 15 | 14 | 13 | 10 | 10 | 10 | 9.081 | 7.525 | 7.113 | 6.827 | 6.965 | 8.485 | 4.59 | 3.928 | 4.259 | 5.085 | 10 | 7.264 | 2.818 | 4.422 | 2.683 | 2.385 | 2.9 |
| Percentage of GeneralAndAdministrativeExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 |
| Value | -81351000.0 | -75449000.0 | -68397000.0 | -58571000.0 | -63018000.0 | -69595000.0 | -63568000.0 | -49487000.0 | -47551000.0 | -36950000.0 | -32575000.0 | -33830000.0 | -30660000.0 | -26515000.0 | -25854000.0 | -22149000.0 | -23377000.0 | -20684000.0 | -15689000.0 | -18758000.0 | -11563000.0 | -6884000.0 | -8360000.0 | -7635000.0 | -6367500.0 | -5298100.0 | -4651000.0 | -2798300.0 | -2110200.0 | -2259500.0 | -11497000.0 | -9409100.0 | -3429300.0 | -1046500.0 | 3466200.0 | -673900.0 | -327280.0 | -5772700.0 | -8351600.0 | -5818500.0 | -10960000.0 | -564300.0 | -741920.0 | -713760.0 | -84629.0 |
| Percentage of NetIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 |
| Value | -81351000.0 | -75449000.0 | -68397000.0 | -58571000.0 | -63018000.0 | -69595000.0 | -63568000.0 | -49487000.0 | -47551000.0 | -36950000.0 | -32575000.0 | -33830000.0 | -30660000.0 | -26515000.0 | -15688000.0 | -18759000.0 | -11563000.0 | -6884000.0 | -8377000.0 | -7617400.0 | -6367500.0 | -5298100.0 | -1046500.0 | 3466200.0 | -673900.0 | -327280.0 | -5772700.0 | -8351600.0 | -5818500.0 |
| Percentage of NetIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.2 | 99.8 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 |
| Value | 81 | 75 | 68 | 58 | 63 | 70 | 65 | 51 | 50 | 39 | 34 | 35 | 31 | 26 | 26 | 22 | 23 | 20 | 15 | 18 | 11 | 7.01 | 8.454 | 7.643 | 6.440225 | 5.298059 | 4.868185 | 2.8025 | 2.110169 | 2.259514 | 11 | 9.409063 | 1.02926 | 0.704913 | 1.722706 | 1.627636 | 1.646425 | 3.136133 | 4.184743 | 5.814141 | 10 | 0.65825 | 0.496077 | 0.167027 | 0.084629 |
| Percentage of OperatingExpenses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 |
| Value | -81426000.0 | -75570000.0 | -68534000.0 | -58966000.0 | -63627000.0 | -70810000.0 | -65110000.0 | -51611000.0 | -50165000.0 | -39986000.0 | -34943000.0 | -35060000.0 | -31378000.0 | -26877000.0 | -26071000.0 | -22343000.0 | -23581000.0 | -20882000.0 | -15922000.0 | -18979000.0 | -11727000.0 | -7010000.0 | -8454000.0 | -7643000.0 | -6440200.0 | -5298000.0 | -4868200.0 | -2802500.0 | -2110200.0 | -2259500.0 | -11498000.0 | -9409100.0 | -1029300.0 | -704910.0 | -1722700.0 | -1627600.0 | -1646400.0 | -3136100.0 | -4184700.0 | -5814100.0 | -10561000.0 | -658250.0 | -496080.0 | -167030.0 | -84629.0 |
| Percentage of OperatingIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-03-31 |
| Value | 62 | 55 | 52 | 43 | 49 | 56 | 54 | 41 | 39 | 30 | 27 | 27 | 24 | 19 | 17 | 17 | 19 | 16 | 10 | 8.481 | 4.463 | 4.192 | 3.323 | 4.983 | 4.055688 | 2.011033 | 1.686829 | 0.353879 | 0.361227 | 0.302662 | 0.559367 | 0.25 | 0.25 | 0.27 | 0.25 | 0.25 | 0.27 | 0.886 | 1.755561 | 0.0 | 0.0 |
| Percentage of ResearchAndDevelopmentExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 |
| Value | 0.0 | 0.0 | 0.5 | 0.0 | 0.0 | 0.5 | 0.0 | 0.0 | 0.0 | 0.5 | 0.0 | 0.0 |
| Percentage of ResearchAndDevelopmentExpense | 0.0 | 0.0 | 0.9 | 0.0 | 0.0 | 1.6 | 0.0 | 0.0 | 0.0 | 2.5 | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:NationalCancerInstitute | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-08-31 | 2016-06-30 |
| Value | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.7 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Percentage of ResearchAndDevelopmentExpense | 0.8 | 0.9 | 1.2 | 1.0 | 0.9 | 1.3 | 1.2 | 1.3 | 1.6 | 1.8 | 1.8 | 2.0 | 2.5 | 2.8 | 2.8 | 2.5 | 3.0 | 0.0 | 11.2 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:CooperativeResearchAndDevelopmentAgreement | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-09-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-06-30 |
| Value | 0.02 | -0.08 | 0.02 | 0.08 | 0.01 | 0.1 | 0.1 |
| Percentage of ResearchAndDevelopmentExpense | 0.0 | -0.2 | 0.0 | 0.1 | 0.0 | 0.3 | 0.4 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:MoffittLicenseAgreementTwo | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | 0.0 | 0.0 | 10.0 |
| Percentage of ResearchAndDevelopmentExpense | 0.0 | 0.0 | 0.0 | 17.6 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:NovartisPharmaAgLicenseAgreement | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2020-06-30 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 |
| Value | 0.1 | 0.1 | -1.1 | 0.7 | 0.4 | 1.2 | 0.1 | 0.1 |
| Percentage of ResearchAndDevelopmentExpense | 0.2 | 0.2 | -2.0 | 1.7 | 1.0 | 3.9 | 0.4 | 0.4 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:ResearchCollaborationAndClinicalGrantAgreementsWithMoffitt | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 4.8 | 3.4 | 4.4 | 2.8 | 5.7 | 6.7 | 8.4 | 9.2 | 6.8 | 3.8 | 4.5 | 4.5 | 3.3 | 2.8 | 3.3 | 3.1 | 3.3 | 4.2 |
| Percentage of ResearchAndDevelopmentExpense | 7.7 | 6.1 | 8.4 | 6.5 | 11.6 | 11.8 | 15.5 | 22.1 | 17.3 | 12.3 | 16.4 | 16.1 | 13.4 | 14.1 | 18.8 | 17.5 | 16.8 | 25.3 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:WuxiApptechIncManufacturingAndServicesAgreement | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 |
| Value | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 | 0.0 | 0.2 | 0.2 | 0.3 | -1.0 | 0.6 | 1.0 | 0.6 | -3.1 | 2.0 | 1.7 |
| Percentage of ResearchAndDevelopmentExpense | 0.4 | 0.2 | 0.2 | 0.2 | 0.4 | 0.0 | 0.5 | 0.5 | 1.0 | -3.6 | 2.1 | 4.1 | 3.0 | -17.6 | 11.3 | 8.7 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:ResearchCollaborationAndClinicalGrantAgreements | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | 0.3 | 0.0 | 0.2 | -1.1 | 0.7 | 0.4 |
| Percentage of ResearchAndDevelopmentExpense | 0.7 | 0.0 | 0.4 | -2.0 | 1.7 | 1.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:ResearchCollaborationAndClinicalGrantAgreementsWithMoffitt | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 |
| Value | 0.1 | 0.02 | 0.0 | 0.2 | 0.6 | 0.1 | 0.1 |
| Percentage of ResearchAndDevelopmentExpense | 0.2 | 0.0 | 0.0 | 0.4 | 2.2 | 0.4 | 0.4 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues iova:StrategicAllianceAgreement | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 852 | 750 | 768 | 782 | 817 | 288 | 344 | 395 | 435 | 461 | 480 | 270 | 284 | 307 | 155 | 173 | 138 | 155 | 171 | 182 | 193 | 100 | 105 | 112 | 114 | 113 | 46 | 17 | 18 | 18 | 19 | 0.168626 | 0.597749 | 0.028333 | 0.029413 | 0.028692 | 0.065611 | 0.076847 | 0.56843 | 3.438596 | 0.466166 | 1.460952 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 108 | 103 | 111 | 70 | 59 | 44 | 45 | 40 | 38 | 26 | 14 | 9.892 |
| Percentage of Liabilities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 12.7 | 13.7 | 14.6 | 9.0 | 7.2 | 15.6 | 13.3 | 10.3 | 8.8 | 5.8 | 3.0 | 6.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 852 | 750 | 768 | 782 | 817 | 288 | 344 | 395 | 435 | 461 | 480 | 270 | 284 | 307 | 155 | 173 | 138 | 155 | 171 | 182 | 193 | 100 | 105 | 112 | 114 | 113 | 46 | 17 | 18 | 18 | 19 | 0.168626 | 0.597749 | 0.028333 | 0.029413 | 0.028692 | 0.065611 | 0.076847 | 0.56843 | 3.438596 | 0.466166 | 1.460952 |
| Percentage of LiabilitiesAndStockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | 744 | 647 | 656 | 711 | 758 | 243 | 298 | 355 | 397 | 434 | 466 | 254 | 270 | 292 | 145 | 165 | 129 | 149 | 166 | 179 | 188 | 98 | 104 | 109 | 112 | 111 | 44 | 16 | 17 | 16 | 17 | -3.340459 | -2.771322 | -12.278619 | -11.319476 | -16.581601 | -16.618362 | -17.258451 | -12.780918 | -5.690725 | -1.403945 | 0.638085 | -0.013488 | 0.002284 | 0.061 | 0.0 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 87.3 | 86.3 | 85.4 | 91.0 | 92.8 | 84.4 | 86.7 | 89.7 | 91.2 | 94.2 | 97.0 | 93.8 | 95.0 | 95.2 | 93.6 | 95.1 | 93.6 | 96.5 | 97.1 | 98.2 | 97.6 | 98.2 | 98.5 | 97.5 | 98.4 | 98.3 | 96.4 | 92.8 | 93.8 | 92.9 | 88.6 | -1981.0 | -463.6 | -43336.8 | -38484.6 | -57791.7 | -25328.6 | -22458.2 | -2248.5 | -165.5 | -301.2 | 43.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 0.003 | 0.003 | 0.004 | 0.004 | 0.004 | 0.004 | 0.004 | 0.004 | 0.006 | 0.006 | 0.006 | 0.006 | 0.006 | 0.007 | 0.007 | 0.008 | 0.008 | 0.011 | 0.0 | 0.0 | 0.0 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:SeriesBPreferredStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 0.033 | 0.096 | 0.019 | 0.155 | 0.317 | 0.912 | 0.22 | 0.239 | 0.372 | 0.138 | -0.042 | -0.12 | -0.003 | 0.0 | 0.0 | 0.029 | 0.163 | 0.078 | 0.068 | 0.048 | 0.038 | 0.0 | 0.0 | 0.0 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.1 | 0.1 | 0.0 | -0.0 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.1 | 0.1 | 0.1 | 0.0 | -0.0 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | 1731 | 1552 | 1486 | 1473 | 1461 | 882 | 869 | 861 | 854 | 844 | 838 | 594 | 576 | 568 | 394 | 323 | 320 | 311 | 209 | 207 | 204 | 200 | 193 | 121 | 87 | 86 | 83 | 81 | 40 | 31 | 19 | 19 | 17 | 16 | 15 | 14 | 13 | 11 | 2.317493 | 0.059412 | 0.059412 | 0.059412 | 0.0 |
| Percentage of StockholdersEquity | 232.6 | 239.9 | 226.5 | 207.0 | 192.7 | 362.7 | 290.8 | 242.7 | 215.0 | 194.2 | 180.0 | 233.9 | 213.2 | 194.2 | 271.3 | 194.1 | 178.7 | 164.7 | 212.0 | 199.9 | 187.4 | 177.9 | 173.1 | 270.2 | 542.2 | 495.0 | 495.9 | 465.2 | -1214.9 | -1145.4 | -156.4 | -168.9 | -102.9 | -98.4 | -92.1 | -114.2 | -234.3 | -840.4 | 363.2 | -440.5 | 2601.2 | 97.4 | 0.0 |
| Percentage of Assets | 203.0 | 206.9 | 193.5 | 188.4 | 178.7 | 306.1 | 252.2 | 217.8 | 196.0 | 183.1 | 174.5 | 219.5 | 202.6 | 184.9 | 254.0 | 188.5 | 175.6 | 160.8 | 208.1 | 196.8 | 182.6 | 175.0 | 170.2 | 260.5 | 503.0 | 464.1 | 460.9 | 412.0 | 24066.8 | 5310.4 | 67789.9 | 64992.2 | 59485.9 | 24930.3 | 20674.3 | 2567.1 | 387.7 | 2531.1 | 158.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | 0.007 | 0.006 | 0.006 | 0.006 | 0.006 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.004 | 0.004 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.002 | 0.002 | 0.002 | 0.001964 | 0.00187 | 0.001407 | 0.001152 | 0.001135 | 0.000921 | 0.000835 | 0.000629 | 0.000556 | 3.4e-05 | 0.003412 | 0.003262 | 0.003262 | 0.003262 | 0.00325 | 0.003291 | 0.003236 | 0.003068 | 0.001588 | 0.001588 | 0.001588 | 0.0 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.1 | -0.2 | 0.5 | -11.8 | 69.5 | 2.6 | 0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.1 | 11.6 | 11.4 | 5.0 | 4.2 | 0.6 | 0.1 | 0.7 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:CommonStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | -986.993 | -905.642 | -830.193 | -761.796 | -703.225 | -640.207 | -570.612 | -507.044 | -457.557 | -410.006 | -372.76 | -340.185 | -306.355 | -275.695 | -249.18 | -157.116 | -141.428 | -122.669 | -111.106 | -104.222 | -95.845 | -88.227444 | -81.859953 | -76.561894 | -71.695179 | -68.896868 | 16 | -64.527185 | -44.569042 | -35.159979 | -31.730724 | -30.684195 | -34.150436 | -33.476539 | -33.148255 | -27.376576 | -19.02499 | -13.206512 | -1.682476 | -0.074488 | -0.058716 | 0.0 | 0.0 |
| Percentage of StockholdersEquity | -132.6 | -139.9 | -126.5 | -107.0 | -92.7 | -263.1 | -190.9 | -142.8 | -115.1 | -94.3 | -80.0 | -133.8 | -113.2 | -94.2 | -171.3 | -94.1 | -79.0 | -64.9 | -112.3 | -100.2 | -87.6 | -78.2 | -73.3 | -170.7 | -443.7 | -396.4 | 100.0 | -366.6 | 1334.2 | 1268.7 | 258.4 | 271.1 | 206.0 | 201.4 | 192.1 | 214.2 | 334.3 | 940.7 | -263.7 | 552.3 | -2570.8 | 0.0 | 0.0 |
| Percentage of Assets | -115.7 | -120.7 | -108.0 | -97.4 | -86.0 | -222.1 | -165.6 | -128.1 | -105.0 | -88.8 | -77.5 | -125.6 | -107.6 | -89.7 | -160.4 | -91.4 | -77.6 | -63.4 | -110.3 | -98.6 | -85.4 | -76.9 | -72.1 | -164.6 | -411.6 | -371.7 | 92.9 | -324.7 | -26430.7 | -5882.1 | -111992.1 | -104321.9 | -119024.2 | -51022.8 | -43135.4 | -4816.2 | -553.3 | -2833.0 | -115.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 666 | 605 | 636 | 723 | 782 | 256 | 316 | 367 | 410 | 444 | 475 | 265 | 279 | 302 | 149 | 171 | 135 | 152 | 169 | 180 | 192 | 99 | 103 | 110 | 112 | 111 | 44 | 17 | 18 | 18 | 19 | 0.138682 | 0.578716 | 0.00815 | 0.007275 | 0.005 | 0.024367 | 0.03405 | 0.524081 | 3.298108 | 0.326065 | 1.300916 |
| Percentage of AssetsCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 78.2 | 80.6 | 82.8 | 92.5 | 95.7 | 88.9 | 91.8 | 92.8 | 94.3 | 96.4 | 98.9 | 98.2 | 98.3 | 98.5 | 96.1 | 98.5 | 98.1 | 98.2 | 98.6 | 99.0 | 99.4 | 98.6 | 98.4 | 98.4 | 98.2 | 98.1 | 96.7 | 98.9 | 99.9 | 99.9 | 99.9 | 82.2 | 96.8 | 28.8 | 24.7 | 17.4 | 37.1 | 44.3 | 92.2 | 95.9 | 69.9 | 89.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2009-12-31 | 2008-12-31 | 2007-12-16 | 2007-09-16 |
| Value | 82 | 131 | 67 | 68 | 160 | 52 | 13 | 38 | 76 | 54 | 82 | 80 | 246 | 297 | 145 | 163 | 114 | 107 | 106 | 92 | 101 | 8.943 | 13 | 10 | 12 | 111 | 44 | 17 | 18 | 17 | 19 | 0.129804 | 0.56958 | 0.0 | 0.0 | 0.0 | 0.015739 | 0.0 | 0.510217 | 0.910608 | 0.268565 | 0.722994 | 1.292469 | 0.795943 | 0.209263 | 0.008257 | 0.002905 | 0.0 | 0.0 |
| Percentage of CashAndCashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 |
| Percentage of Assets | 9.7 | 17.6 | 8.8 | 8.7 | 19.6 | 18.2 | 4.1 | 9.8 | 17.6 | 11.7 | 17.1 | 29.8 | 86.4 | 96.7 | 93.6 | 93.9 | 82.8 | 68.9 | 62.1 | 51.0 | 52.3 | 8.9 | 12.9 | 9.1 | 10.9 | 98.0 | 96.6 | 98.7 | 99.5 | 99.2 | 99.0 | 77.0 | 95.3 | 0.0 | 0.0 | 0.0 | 24.0 | 0.0 | 89.8 | 26.5 | 57.6 | 0.0 | 88.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 | 2016-12-31 |
| Value | 88 | 138 | 72 | 73 | 166 | 58 | 19 | 44 | 82 | 54 | 82 | 80 | 246 | 145 | 106 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 10.4 | 18.4 | 9.5 | 9.4 | 20.3 | 20.1 | 5.6 | 11.2 | 18.9 | 11.7 | 17.1 | 29.8 | 86.4 | 93.6 | 62.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | 573 | 472 | 562 | 645 | 611 | 193 | 293 | 386 |
| Percentage of ShortTermInvestments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 67.3 | 62.9 | 73.1 | 82.6 | 74.8 | 67.0 | 85.0 | 80.4 |
| Period End | 2021-03-31 |
| Value | 29 |
| Percentage of ShortTermInvestments | 6.3 |
| Percentage of Assets | 4.0 |
| Percentage of Assets us-gaap:CommercialPaper | 0.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2019-12-31 | 2018-12-31 |
| Value | 62 | 91 | 224 | 270 | 50 | 120 |
| Percentage of ShortTermInvestments | 13.1 | 16.4 | 34.8 | 44.3 | 17.4 | 31.3 |
| Percentage of Assets | 8.3 | 12.0 | 28.7 | 33.1 | 14.8 | 25.2 |
| Percentage of Assets us-gaap:USGovernmentCorporationsAndAgenciesSecurities | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2019-12-31 | 2018-12-31 |
| Value | 380 | 470 | 421 | 340 | 242 | 265 |
| Percentage of ShortTermInvestments | 80.5 | 83.6 | 65.2 | 55.7 | 82.6 | 68.7 |
| Percentage of Assets | 50.7 | 61.2 | 53.8 | 41.7 | 70.3 | 55.2 |
| Percentage of Assets us-gaap:USTreasurySecurities | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 |
| Value | 10 | 11 | 6.663 | 9.442 | 10 | 10 | 9.412 | 5.433 | 6.785 | 4.735 | 6.851 | 5.863 | 3.682 | 5.644 | 3.917 | 7.995 | 6.417 | 5.396 | 3.042 | 1.274 | 0.782 | 0.193 | 0.277 | 0.245 | 0.378409 | 0.128883 | 0.066134 | 0.015074 | 0.009744 | 0.01 | 0.015 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.008628 | 0.03405 | 0.013864 |
| Percentage of PrepaidExpenseAndOtherAssetsCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 1.2 | 1.5 | 0.9 | 1.2 | 1.3 | 3.7 | 2.7 | 1.4 | 1.6 | 1.0 | 1.4 | 2.2 | 1.3 | 1.8 | 2.5 | 4.6 | 4.6 | 3.5 | 1.8 | 0.7 | 0.4 | 0.2 | 0.3 | 0.2 | 0.3 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 3.0 | 0.8 | 17.6 | 17.0 | 17.4 | 13.2 | 44.3 | 2.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2013-12-31 |
| Value | 86 | 78 | 64 | 13 | 6.643 | 5.483 | 5.386 | 5.123 | 5.098 | 4.455 | 2.779 | 2.627 | 1.635789 | 0.043758 |
| Percentage of PropertyPlantAndEquipmentGross | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 10.1 | 10.5 | 8.4 | 3.8 | 1.4 | 3.5 | 3.1 | 3.7 | 3.3 | 2.6 | 2.6 | 2.3 | 3.5 | 0.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 0.608 | 0.619 | 0.27 | 0.258 | 0.337 | 0.349 | 0.331 | 0.263 | 0.255 | 0.245 | 0.085 | 0.072368 | 0.043758 |
| Percentage of PropertyPlantAndEquipmentGross | 0.7 | 0.8 | 0.4 | 2.0 | 5.1 | 6.4 | 6.1 | 5.1 | 5.0 | 5.5 | 3.1 | 4.4 | 100.0 |
| Percentage of Assets | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.2 | 0.2 |
| Percentage of Assets us-gaap:ComputerEquipment | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 76 | 70 | 56 | 5.417 | 0.107 | 0.013 | 0.105 | 0.032 | 0.267 | 0.276 | 0.0 |
| Percentage of PropertyPlantAndEquipmentGross | 88.0 | 89.1 | 87.7 | 41.6 | 1.6 | 0.2 | 1.9 | 0.6 | 5.2 | 6.2 | 0.0 |
| Percentage of Assets | 8.9 | 9.3 | 7.4 | 1.6 | 0.0 | 0.0 | 0.1 | 0.0 | 0.2 | 0.2 | 0.0 |
| Percentage of Assets us-gaap:ConstructionInProgress | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2013-12-31 |
| Value | 5.534 | 4.911 | 4.656 | 4.53 | 4.16 | 3.207 | 3.064 | 2.942 | 2.698 | 2.405 | 1.703 | 1.563 | 0.688484 | 0.0 |
| Percentage of PropertyPlantAndEquipmentGross | 6.4 | 6.2 | 7.2 | 34.8 | 62.6 | 58.5 | 56.9 | 57.4 | 52.9 | 54.0 | 61.3 | 59.5 | 42.1 | 0.0 |
| Percentage of Assets | 0.6 | 0.7 | 0.6 | 1.3 | 0.9 | 2.1 | 1.8 | 2.1 | 1.7 | 1.4 | 1.6 | 1.4 | 1.5 | 0.0 |
| Percentage of Assets us-gaap:Equipment | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2013-12-31 |
| Value | 3.63 | 2.573 | 2.573 | 2.372 | 1.776 | 1.726 | 1.707 | 1.707 | 1.704 | 1.381 | 0.853 | 0.853 | 0.762161 | 0.0 |
| Percentage of PropertyPlantAndEquipmentGross | 4.2 | 3.3 | 4.0 | 18.2 | 26.7 | 31.5 | 31.7 | 33.3 | 33.4 | 31.0 | 30.7 | 32.5 | 46.6 | 0.0 |
| Percentage of Assets | 0.4 | 0.3 | 0.3 | 0.7 | 0.4 | 1.1 | 1.0 | 1.2 | 1.1 | 0.8 | 0.8 | 0.8 | 1.6 | 0.0 |
| Percentage of Assets us-gaap:LeaseholdImprovements | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 |
| Value | 0.082 |
| Percentage of PropertyPlantAndEquipmentGross | 0.1 |
| Percentage of Assets | 0.0 |
| Percentage of Assets us-gaap:MachineryAndEquipment | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2013-12-31 |
| Value | 0.48 | 0.48 | 0.48 | 0.457 | 0.263 | 0.188 | 0.179 | 0.179 | 0.174 | 0.148 | 0.138 | 0.211 | 0.112776 | 0.0 |
| Percentage of PropertyPlantAndEquipmentGross | 0.6 | 0.6 | 0.7 | 3.5 | 4.0 | 3.4 | 3.3 | 3.5 | 3.4 | 3.3 | 5.0 | 8.0 | 6.9 | 0.0 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.0 |
| Percentage of Assets us-gaap:OfficeEquipment | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 6316000.0 | 5950000.0 | 5578000.0 | 4498000.0 | 3960000.0 | 3033000.0 | 2791000.0 | 2545000.0 | 2302000.0 | 2081000.0 | 1643.0 | 1372000.0 | 1103000.0 | 794000.0 | 529870.0 | 289670.0 | 104220.0 | 38782.0 | 33730.0 | 32567.0 | 16002.0 | 13814.0 | 12020.0 | 10870.0 | 8915.0 | 7361.0 | 5809.0 | 4257.0 | 2704.0 | 1513.0 | 595.0 | 0 |
| Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 0.7 | 0.8 | 0.7 | 1.3 | 0.8 | 2.0 | 1.6 | 1.8 | 1.5 | 1.2 | 0.0 | 1.4 | 1.0 | 0.7 | 0.5 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 8.2 | 2.0 | 38.4 | 30.3 | 25.7 | 8.9 | 5.5 | 0.5 | 0.0 | 0.1 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 80 | 72 | 59 | 39 | 18 | 13 | 8.536 | 5.856 | 4.472 | 3.504 | 2.683 | 2.64 | 2.706 | 2.247 | 2.45 | 2.595 | 2.578 | 2.796 | 2.374 | 1.769 | 1.192 | 1.409 | 1.676 | 1.833 | 2.025056 | 2.12826 | 1.531566 | 0.17099 | 0.015771 | 0.014628 | 0.027756 | 0.029944 | 0.019033 | 0.020183 | 0.022138 | 0.023692 | 0.025244 | 0.026797 | 0.028349 | 0.018803 | 0.016299 | 0.0 |
| Percentage of PropertyPlantAndEquipmentNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 9.4 | 9.7 | 7.7 | 5.0 | 2.3 | 4.7 | 2.5 | 1.5 | 1.0 | 0.8 | 0.6 | 1.0 | 1.0 | 0.7 | 1.6 | 1.5 | 1.9 | 1.8 | 1.4 | 1.0 | 0.6 | 1.4 | 1.6 | 1.6 | 1.8 | 1.9 | 3.3 | 1.0 | 0.1 | 0.1 | 0.1 | 17.8 | 3.2 | 71.2 | 75.3 | 82.6 | 38.5 | 34.9 | 5.0 | 0.5 | 3.5 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 46 | 10 |
| Percentage of LongTermInvestments | 100.0 | 100.0 |
| Percentage of Assets | 5.4 | 1.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 52 | 55 | 54 | 10 | 7.48 | 9.305 | 10 | 13 | 11 | 9.957 | 0.0 |
| Percentage of OperatingLeaseRightOfUseAsset | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 6.2 | 7.3 | 7.1 | 1.4 | 0.9 | 3.2 | 3.1 | 3.5 | 2.7 | 2.2 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 |
| Value | 1.15 | 1.163 | 12 | 3.385 | 3.182 | 3.48 | 3.481 | 3.395 | 3.345 | 3.288 | 2.764 | 2.331 | 2.264 | 2.275 | 3.633 | 0.0 |
| Percentage of OtherAssetsNoncurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 0.1 | 0.2 | 1.7 | 0.4 | 0.4 | 1.2 | 1.0 | 0.9 | 0.8 | 0.7 | 0.6 | 0.9 | 0.8 | 0.7 | 2.3 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 21 | 13 | 13 | 24 | 10 | 10 | 15 | 9.921 | 12 | 7.589 | 2.739 | 6.014 | 5.196 | 6.576 | 1.232 | 2.905 | 3.695 | 2.174 | 0.863 | 0.228 | 0.725 | 1.054 | 0.958 | 1.161 | 1.156922 | 1.10737 | 1.248413 | 0.573801 | 0.44055 | 0.286325 | 0.412976 | 1.550865 | 1.480851 | 1.291718 | 1.098271 | 0.841616 | 0.609266 | 0.504252 | 0.190048 | 0.206864 | 0.130638 | 0.030292 |
| Percentage of AccountsPayableCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 2.6 | 1.8 | 1.8 | 3.2 | 1.3 | 3.7 | 4.5 | 2.5 | 2.9 | 1.6 | 0.6 | 2.2 | 1.8 | 2.1 | 0.8 | 1.7 | 2.7 | 1.4 | 0.5 | 0.1 | 0.4 | 1.0 | 0.9 | 1.0 | 1.0 | 1.0 | 2.7 | 3.3 | 2.4 | 1.6 | 2.1 | 919.7 | 247.7 | 4559.1 | 3734.0 | 2933.3 | 928.6 | 656.2 | 33.4 | 6.0 | 28.0 | 2.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2013-12-31 |
| Value | 34 | 35 | 35 | 32 | 38 | 22 | 16 | 16 | 13 | 8.489 | 11 | 10 | 8.986 | 8.114 | 8.66 | 5.624 | 5.165 | 3.329 | 4.105 | 2.966 | 3.881 | 0.69 | 0.586 | 1.608 | 0.623774 | 0.717847 | 0.327847 | 1.518225 |
| Percentage of AccruedLiabilitiesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 4.0 | 4.8 | 4.6 | 4.1 | 4.7 | 7.8 | 4.7 | 4.1 | 3.1 | 1.8 | 2.4 | 3.9 | 3.2 | 2.6 | 5.6 | 3.2 | 3.7 | 2.1 | 2.4 | 1.6 | 2.0 | 0.7 | 0.6 | 1.4 | 0.5 | 0.6 | 0.7 | 7.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 60 | 55 | 54 | 64 | 54 | 39 | 39 | 34 | 33 | 22 | 14 | 16 | 14 | 14 | 9.892 | 8.529 | 8.86 | 5.503 | 4.968 | 3.194 | 4.606 | 1.83 | 1.63 | 2.855 | 1.866196 | 1.910717 | 1.66176 | 1.258689 | 1.156472 | 1.109486 | 2.269932 | 3.509085 | 3.369071 | 12 | 11 | 16 | 16 | 17 | 13 | 9.129321 | 1.870111 | 0.822867 |
| Percentage of LiabilitiesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 7.1 | 7.3 | 7.1 | 8.2 | 6.7 | 13.7 | 11.3 | 8.7 | 7.8 | 4.8 | 3.0 | 6.2 | 5.0 | 4.8 | 6.4 | 4.9 | 6.4 | 3.5 | 2.9 | 1.8 | 2.4 | 1.8 | 1.5 | 2.5 | 1.6 | 1.7 | 3.6 | 7.2 | 6.2 | 6.1 | 11.4 | 2081.0 | 563.6 | 43436.8 | 38584.6 | 57891.7 | 25428.6 | 22558.2 | 2348.5 | 265.5 | 401.2 | 56.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 4428000.0 | 5916000.0 | 6284000.0 | 7196000.0 | 5873000.0 | 6431000.0 | 7252000.0 | 8370000.0 | 7484000.0 | 6059000.0 | 0 |
| Percentage of OperatingLeaseLiabilityCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 0.5 | 0.8 | 0.8 | 0.9 | 0.7 | 2.2 | 2.1 | 2.1 | 1.7 | 1.3 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 |
| Value | 1793000.0 | 1718000.0 | 1712000.0 | 2314000.0 | 2085000.0 | 1675000.0 | 1657000.0 | 1521000.0 | 980000.0 | 882000.0 | 489000.0 | 459000.0 | 388000.0 | 478000.0 | 496000.0 | 286000.0 | 87000.0 | 114000.0 | 124000.0 | 147000.0 | 616000.0 | 616000.0 | 866000.0 | 0 |
| Percentage of OtherAccruedLiabilitiesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.6 | 0.5 | 0.4 | 0.2 | 0.2 | 0.1 | 0.2 | 0.1 | 0.2 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 2146.9 | 938.9 | 1126.9 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 47 | 48 | 57 | 6.063 | 4.353 | 5.44 | 6.6 | 6.07 | 4.666 | 4.433 | 0.23 | 0.297 |
| Percentage of LiabilitiesNoncurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 5.6 | 6.4 | 7.4 | 0.8 | 0.5 | 1.9 | 1.9 | 1.5 | 1.1 | 1.0 | 0.0 | 0.2 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 11 | 2.352 | 2.352 | 2.352 | 2.352 | 0.053 | 0.053 | 0.053 | 0.23 |
| Percentage of OtherLiabilitiesNoncurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 1.5 | 0.3 | 0.3 | 0.8 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 46 | 47 | 45 | 3.711 | 2.001 | 3.088 | 4.248 | 6.017 | 4.613 | 4.38 | 0.0 |
| Percentage of OperatingLeaseLiabilityNoncurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 5.5 | 6.3 | 5.9 | 0.5 | 0.2 | 1.1 | 1.2 | 1.5 | 1.1 | 0.9 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | 4423000.0 | 4423000.0 | 6063000.0 | 2018000.0 | 6514000.0 | 4589000.0 | 4589.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.6 | 0.8 | 0.3 | 1.6 | 1.1 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 |
| Value | 1782000.0 | 1680000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | 29.4 | 83.3 |
| Percentage of Assets | 0.2 | 0.2 |
| Percentage of Assets iova:CmoEmbeddedLeases | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 4423000.0 | 4423000.0 | 4281000.0 | 338000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | 100.0 | 100.0 | 70.6 | 16.7 |
| Percentage of Assets | 0.5 | 0.6 | 0.6 | 0.0 |
| Percentage of Assets iova:FacilityLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | 4516000.0 | 4516000.0 | 4286000.0 | 265000.0 | 1987.0 | 1412.0 | 1412.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.6 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 4516000.0 | 4516000.0 | 4286000.0 | 265000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.6 | 0.6 | 0.0 |
| Percentage of Assets iova:FacilityLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | 4372000.0 | 4372000.0 | 4375000.0 | 273000.0 | 131.0 | 144.0 | 144.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.6 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 4372000.0 | 4372000.0 | 4375000.0 | 273000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.6 | 0.6 | 0.0 |
| Percentage of Assets iova:FacilityLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2018-12-31 |
| Value | 4281000.0 | 0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive | 100.0 | 0.0 |
| Percentage of Assets | 0.6 | 0.0 |
| Period End | 2020-12-31 |
| Value | 4281000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive | 100.0 |
| Percentage of Assets | 0.6 |
| Percentage of Assets iova:FacilityLeases | 0.0 |
| Period End | 2020-12-31 | 2018-12-31 |
| Value | 74 | 0.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive | 100.0 | 0.0 |
| Percentage of Assets | 9.7 | 0.0 |
| Period End | 2020-12-31 |
| Value | 74 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive | 100.0 |
| Percentage of Assets | 9.7 |
| Percentage of Assets iova:FacilityLeases | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2019-01-01 |
| Value | 51 | 52 | 51 | 10 | 7.874 | 9.519 | 11 | 14 | 12 | 10 | 10 |
| Percentage of OperatingLeaseLiability | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 6.0 | 7.1 | 6.7 | 1.4 | 1.0 | 3.3 | 3.3 | 3.6 | 2.8 | 2.3 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 2.677 | 4.173 | 7.792 | 8.705 |
| Percentage of OperatingLeaseLiability | 5.2 | 7.9 | 15.1 | 79.8 |
| Percentage of Assets | 0.3 | 0.6 | 1.0 | 1.1 |
| Percentage of Assets iova:CmoEmbeddedLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 48 | 48 | 43 | 2.202 |
| Percentage of OperatingLeaseLiability | 94.8 | 92.1 | 84.9 | 20.2 |
| Percentage of Assets | 5.7 | 6.5 | 5.7 | 0.3 |
| Percentage of Assets iova:FacilityLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-10-19 |
| Value | 98 | 101 | 103 | 11 | 0.012948 | 0.012606 | 0.012606 | 0.059 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 11.5 | 13.5 | 13.5 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 2.695 | 4.24 | 8.07 | 9.168 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 2.7 | 4.2 | 7.8 | 79.6 |
| Percentage of Assets | 0.3 | 0.6 | 1.1 | 1.2 |
| Percentage of Assets iova:CmoEmbeddedLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 95 | 96 | 95 | 2.346 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 97.3 | 95.8 | 92.2 | 20.4 |
| Percentage of Assets | 11.2 | 12.9 | 12.4 | 0.3 |
| Percentage of Assets iova:FacilityLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-02-03 |
| Value | 0.2795408 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 0.0 |
| Percentage of Assets | 0.0 |
| Percentage of Assets iova:NewHeadquartersLease iova:OfficeSpace us-gaap:SubsequentEvent | 0.0 |
| Period End | 2021-02-03 |
| Value | 0.10318160000000001 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 0.0 |
| Percentage of Assets | 0.0 |
| Percentage of Assets iova:SanCarlosCalifornia iova:Suite100AndSuit125FirstAmendment iova:OfficeSpace us-gaap:SubsequentEvent | 0.0 |
| Period End | 2021-02-03 |
| Value | 0.04410165 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 0.0 |
| Percentage of Assets | 0.0 |
| Percentage of Assets iova:SanCarlosCalifornia iova:Suite150SecondAmendment iova:OfficeSpace us-gaap:SubsequentEvent | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 47 | 48 | 51 | 0.607 |
| Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 5.5 | 6.4 | 6.7 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 0.018 | 0.067 | 0.278 | 0.463 |
| Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount | 0.0 | 0.1 | 0.5 | 76.3 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.1 |
| Percentage of Assets iova:CmoEmbeddedLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 47 | 48 | 51 | 0.144 |
| Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount | 100.0 | 99.9 | 99.5 | 23.7 |
| Percentage of Assets | 5.5 | 6.4 | 6.7 | 0.0 |
| Percentage of Assets iova:FacilityLeases | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | 744 | 647 | 656 | 711 | 758 | 243 | 298 | 355 | 397 | 434 | 466 | 254 | 270 | 292 | 145 | 165 | 129 | 149 | 166 | 179 | 188 | 98 | 104 | 109 | 112 | 111 | 44 | 16 | 17 | 16 | 17 | -3.340459 | -2.771322 | -12.278619 | -11.319476 | -16.581601 | -16.618362 | -17.258451 | -12.780918 | -5.690725 | -1.403945 | 0.638085 | -0.013488 | 0.002284 | 0.061 | 0.0 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 87.3 | 86.3 | 85.4 | 91.0 | 92.8 | 84.4 | 86.7 | 89.7 | 91.2 | 94.2 | 97.0 | 93.8 | 95.0 | 95.2 | 93.6 | 95.1 | 93.6 | 96.5 | 97.1 | 98.2 | 97.6 | 98.2 | 98.5 | 97.5 | 98.4 | 98.3 | 96.4 | 92.8 | 93.8 | 92.9 | 88.6 | -1981.0 | -463.6 | -43336.8 | -38484.6 | -57791.7 | -25328.6 | -22458.2 | -2248.5 | -165.5 | -301.2 | 43.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 0.003 | 0.003 | 0.004 | 0.004 | 0.004 | 0.004 | 0.004 | 0.004 | 0.006 | 0.006 | 0.006 | 0.006 | 0.006 | 0.007 | 0.007 | 0.008 | 0.008 | 0.011 | 0.0 | 0.0 | 0.0 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:SeriesBPreferredStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 0.033 | 0.096 | 0.019 | 0.155 | 0.317 | 0.912 | 0.22 | 0.239 | 0.372 | 0.138 | -0.042 | -0.12 | -0.003 | 0.0 | 0.0 | 0.029 | 0.163 | 0.078 | 0.068 | 0.048 | 0.038 | 0.0 | 0.0 | 0.0 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.1 | 0.1 | 0.0 | -0.0 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.1 | 0.1 | 0.1 | 0.0 | -0.0 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | 1731 | 1552 | 1486 | 1473 | 1461 | 882 | 869 | 861 | 854 | 844 | 838 | 594 | 576 | 568 | 394 | 323 | 320 | 311 | 209 | 207 | 204 | 200 | 193 | 121 | 87 | 86 | 83 | 81 | 40 | 31 | 19 | 19 | 17 | 16 | 15 | 14 | 13 | 11 | 2.317493 | 0.059412 | 0.059412 | 0.059412 | 0.0 |
| Percentage of StockholdersEquity | 232.6 | 239.9 | 226.5 | 207.0 | 192.7 | 362.7 | 290.8 | 242.7 | 215.0 | 194.2 | 180.0 | 233.9 | 213.2 | 194.2 | 271.3 | 194.1 | 178.7 | 164.7 | 212.0 | 199.9 | 187.4 | 177.9 | 173.1 | 270.2 | 542.2 | 495.0 | 495.9 | 465.2 | -1214.9 | -1145.4 | -156.4 | -168.9 | -102.9 | -98.4 | -92.1 | -114.2 | -234.3 | -840.4 | 363.2 | -440.5 | 2601.2 | 97.4 | 0.0 |
| Percentage of Assets | 203.0 | 206.9 | 193.5 | 188.4 | 178.7 | 306.1 | 252.2 | 217.8 | 196.0 | 183.1 | 174.5 | 219.5 | 202.6 | 184.9 | 254.0 | 188.5 | 175.6 | 160.8 | 208.1 | 196.8 | 182.6 | 175.0 | 170.2 | 260.5 | 503.0 | 464.1 | 460.9 | 412.0 | 24066.8 | 5310.4 | 67789.9 | 64992.2 | 59485.9 | 24930.3 | 20674.3 | 2567.1 | 387.7 | 2531.1 | 158.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | 0.007 | 0.006 | 0.006 | 0.006 | 0.006 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.004 | 0.004 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.002 | 0.002 | 0.002 | 0.001964 | 0.00187 | 0.001407 | 0.001152 | 0.001135 | 0.000921 | 0.000835 | 0.000629 | 0.000556 | 3.4e-05 | 0.003412 | 0.003262 | 0.003262 | 0.003262 | 0.00325 | 0.003291 | 0.003236 | 0.003068 | 0.001588 | 0.001588 | 0.001588 | 0.0 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.0 | -0.1 | -0.2 | 0.5 | -11.8 | 69.5 | 2.6 | 0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.1 | 11.6 | 11.4 | 5.0 | 4.2 | 0.6 | 0.1 | 0.7 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:CommonStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 | 2007-09-16 |
| Value | -986.993 | -905.642 | -830.193 | -761.796 | -703.225 | -640.207 | -570.612 | -507.044 | -457.557 | -410.006 | -372.76 | -340.185 | -306.355 | -275.695 | -249.18 | -157.116 | -141.428 | -122.669 | -111.106 | -104.222 | -95.845 | -88.227444 | -81.859953 | -76.561894 | -71.695179 | -68.896868 | 16 | -64.527185 | -44.569042 | -35.159979 | -31.730724 | -30.684195 | -34.150436 | -33.476539 | -33.148255 | -27.376576 | -19.02499 | -13.206512 | -1.682476 | -0.074488 | -0.058716 | 0.0 | 0.0 |
| Percentage of StockholdersEquity | -132.6 | -139.9 | -126.5 | -107.0 | -92.7 | -263.1 | -190.9 | -142.8 | -115.1 | -94.3 | -80.0 | -133.8 | -113.2 | -94.2 | -171.3 | -94.1 | -79.0 | -64.9 | -112.3 | -100.2 | -87.6 | -78.2 | -73.3 | -170.7 | -443.7 | -396.4 | 100.0 | -366.6 | 1334.2 | 1268.7 | 258.4 | 271.1 | 206.0 | 201.4 | 192.1 | 214.2 | 334.3 | 940.7 | -263.7 | 552.3 | -2570.8 | 0.0 | 0.0 |
| Percentage of Assets | -115.7 | -120.7 | -108.0 | -97.4 | -86.0 | -222.1 | -165.6 | -128.1 | -105.0 | -88.8 | -77.5 | -125.6 | -107.6 | -89.7 | -160.4 | -91.4 | -77.6 | -63.4 | -110.3 | -98.6 | -85.4 | -76.9 | -72.1 | -164.6 | -411.6 | -371.7 | 92.9 | -324.7 | -26430.7 | -5882.1 | -111992.1 | -104321.9 | -119024.2 | -51022.8 | -43135.4 | -4816.2 | -553.3 | -2833.0 | -115.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 7000.0 | 6000.0 | 6000.0 | 6000.0 | 6000.0 | 5000.0 | 5000.0 | 5000.0 | 5000.0 | 5000.0 | 5000.0 | 4000.0 | 4000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 2000.0 | 2000.0 | 2000.0 | 1964.0 | 1870.0 | 1407.0 | 1152.0 | 1135.0 | 921.0 | 835.0 | 629.0 | 556.0 | 34.0 | 3412.0 | 3262.0 | 3262.0 | 3262.0 | 3250.0 | 3291.0 | 3236.0 | 3068.0 |
| Percentage of CommonStockValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 0.1 | 11.6 | 11.4 | 5.0 | 4.2 | 0.6 | 0.1 | 0.7 | 0.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2013-12-31 |
| Value | 1731 | 1552 | 1486 | 1473 | 1461 | 882 | 869 | 0.239 | 0.372 | 844 | 838 | 594 | 576 | 568 | 394 | 388 | 330 | 327 | 323 | 320 | 311 | 209 | 207 | 204 | 200 | 193 | 121 | 81 |
| Percentage of AdditionalPaidInCapital | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 203.0 | 206.9 | 193.5 | 188.4 | 178.7 | 306.1 | 252.2 | 0.1 | 0.1 | 183.1 | 174.5 | 219.5 | 202.6 | 184.9 | 254.0 | 223.5 | 239.3 | 210.9 | 188.5 | 175.6 | 160.8 | 208.1 | 196.8 | 182.6 | 175.0 | 170.2 | 260.5 | 412.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | -986990000.0 | -905640000.0 | -830190000.0 | -761800000.0 | -703220000.0 | -640210000.0 | -570610000.0 | -507040000.0 | -457560000.0 | -410010000.0 | -372760000.0 | -340180000.0 | -306360000.0 | -275700000.0 | -249180000.0 | -223330000.0 | -201180000.0 | -177800000.0 | -157120000.0 | -141430000.0 | -122670000.0 | -111110000.0 | -104220000.0 | -95845000.0 | -88227000.0 | -81860000.0 | -76562000.0 | -71695000.0 | -68897000.0 | -66787000.0 | -64527000.0 | -44569000.0 | -35160000.0 | -31731000.0 | -30684000.0 | -34150000.0 | -33477000.0 | -33149000.0 | -27377000.0 | -19025000.0 | -13207000.0 | -1682500.0 |
| Percentage of RetainedEarningsAccumulatedDeficit | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | -115.7 | -120.7 | -108.0 | -97.4 | -86.0 | -222.1 | -165.6 | -128.1 | -105.0 | -88.8 | -77.5 | -125.6 | -107.6 | -89.7 | -160.4 | -128.4 | -145.8 | -114.4 | -91.4 | -77.6 | -63.4 | -110.3 | -98.6 | -85.4 | -76.9 | -72.1 | -164.6 | -411.6 | -371.7 | -369.3 | -324.7 | -26430.7 | -5882.1 | -111992.1 | -104321.9 | -119024.2 | -51022.8 | -43136.7 | -4816.2 | -553.3 | -2833.0 | -115.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-06-30 | 2014-12-31 |
| Value | 0.033 | 0.096 | 0.019 | 0.155 | 0.317 | 0.912 | 0.22 | 861 | 854 | 0.138 | -0.042 | -0.12 | -0.003 | 0.0 | 0.0 | 0.0 | 0.002 | 0.029 | 0.163 | 0.078 | 0.068 | 0.048 | 0.021704 | 0.0 |
| Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.1 | 217.8 | 196.0 | 0.0 | -0.0 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2012-03-31 | 2007-12-31 |
| Value | 160 | 42 | 0.0 | 0.043 | 567 | 236 | 0.0 | 0.001 | 162 | 0.067919 | 0.008 |
| Percentage of StockIssuedDuringPeriodValueNewIssues | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-02-08 |
| Value | 350 |
| Percentage of StockIssuedDuringPeriodValueNewIssues | 0.0 |
| Percentage of Assets | 0.0 |
| Percentage of Assets srt:Maximum us-gaap:SubsequentEvent iova:AtMarketOffering iova:SalesAgreementWithJefferriesLlc | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2012-03-31 | 2007-12-31 |
| Value | 160 | 42 | 0.0 | 0.043 | 566 | 236 | 0.0 | 0.001 | 162 | 0.067909 | 0.007472 |
| Percentage of StockIssuedDuringPeriodValueNewIssues | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 93.4 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2018-12-31 | 2013-07-31 | 2012-03-31 | 2007-12-31 |
| Value | 0.001 | 0.0 | 0.0 | 0.001 | 0.001 | 6.7 | 1e-05 | 0.000528 |
| Percentage of StockIssuedDuringPeriodValueNewIssues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6.6 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:CommonStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 |
| Value | 14 | 16 | 10 | 10 | 10 | 9.412 | 5.407 | 6.598 | 6.426 | 5.846 | 5.185 | 5.516 | 5.222 | 4.104 | 3.123 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 |
| Value | 14 | 16 | 10 | 10 | 10 | 9.412 | 5.407 | 6.598 | 6.426 | 5.846 | 5.185 | 5.516 | 5.222 | 4.104 | 3.123 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | -54008000.0 | -62391000.0 | -62692000.0 | -40515000.0 | -36635000.0 | -65292000.0 | -53822000.0 | -42182000.0 | -33795000.0 | -29090000.0 | -31549000.0 | -27928000.0 | -23923000.0 | -17849000.0 | -20964000.0 | -21446000.0 | -17496000.0 | -18803000.0 | -12159000.0 | -1728800.0 | -1322200.0 | -2267400.0 | -2253200.0 | -427070.0 | -681930.0 | -300000.0 | 0 | -280740.0 | -1200500.0 | -760220.0 | -2709700.0 | -1649500.0 | -1265600.0 | -564480.0 | -369590.0 | -113320.0 |
| Percentage of NetCashProvidedByUsedInOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | -159.165 | 77 | 58 | -52.955 | -423.756 | 100 | 26 | 3.495 | 58 | 1.033 | -206.382 | -149.373 | -30.502 | -0.022 | 0.058 | 14 | 25 | 18 | 25 | -0.160272 | -0.002305 | -0.003437 | -1e-06 | -0.012704 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.060737 | -0.003455 | 0.033139 | -0.05 | 0.002981 | 0.0 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 163 | 50 | 2.958 | 1.166 | 568 | 3.833 | 2.088 | 0.664 | 3.381 | -0.002 | 239 | 12 | 3.36 | 169 | 2.899 | 56 | -0.648 | 0.383 | 0.216 | 0.638345 | 1.82098 | 0.5425 | 21 | 0.0 | 1.25151 | 0.3 | 0.0 | 0.265 | 1.21625 | 0.25 | 2.37 | 2.295 | 0.778 | 0.045 | 0.863137 | 0.7 |
| Percentage of NetCashProvidedByUsedInFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 |
| Value | 366000.0 | 372000.0 | 321000.0 | 307000.0 | 260000.0 | 252000.0 | 294000.0 | 315000.0 | 289000.0 | 271000.0 | 252000.0 | 251000.0 |
| Percentage of DepreciationDepletionAndAmortization | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 |
| Value | 4.965 | -0.015 | -12.132 | 16 | 0.672 | -7.768 | 6.081 | -3.326 | 5.369 | 4.582 | -3.275 | 1.096 | -1.553 | 5.239 | -1.779 | -0.839 | 1.521 | 1.466 | 0.48 | -0.497 | -0.329 | 0.096 |
| Percentage of IncreaseDecreaseInAccountsPayable | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | -54008000.0 | -62391000.0 | -62692000.0 | -40515000.0 | -36635000.0 | -65292000.0 | -53822000.0 | -42182000.0 | -33795000.0 | -29090000.0 | -31549000.0 | -27928000.0 | -23923000.0 | -17849000.0 | -20964000.0 | -21446000.0 | -17496000.0 | -18803000.0 | -12159000.0 | -1728800.0 | -1322200.0 | -2267400.0 | -2253200.0 | -427070.0 | -681930.0 | -300000.0 | 0 | -280740.0 | -1200500.0 | -760220.0 | -2709700.0 | -1649500.0 | -1265600.0 | -564480.0 | -369590.0 | -113320.0 |
| Percentage of NetCashProvidedByUsedInOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 |
| Value | -81351000.0 | -75449000.0 | -68397000.0 | -58571000.0 | -63018000.0 | -69595000.0 | -63568000.0 | -49487000.0 | -47551000.0 | -36950000.0 | -32575000.0 | -33830000.0 | -30660000.0 | -26515000.0 | -25854000.0 | -22149000.0 | -23377000.0 | -20684000.0 | -15689000.0 | -18758000.0 | -11563000.0 | -6884000.0 | -8360000.0 | -7635000.0 | -6367500.0 | -5298100.0 | -4651000.0 | -2798300.0 | -2110200.0 | -2259500.0 | -11497000.0 | -9409100.0 | -3429300.0 | -1046500.0 | 3466200.0 | -673900.0 | -327280.0 | -5772700.0 | -8351600.0 | -5818500.0 | -10960000.0 | -564300.0 | -741920.0 | -713760.0 | -84629.0 |
| Percentage of NetIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 |
| Value | -81351000.0 | -75449000.0 | -68397000.0 | -58571000.0 | -63018000.0 | -69595000.0 | -63568000.0 | -49487000.0 | -47551000.0 | -36950000.0 | -32575000.0 | -33830000.0 | -30660000.0 | -26515000.0 | -15688000.0 | -18759000.0 | -11563000.0 | -6884000.0 | -8377000.0 | -7617400.0 | -6367500.0 | -5298100.0 | -1046500.0 | 3466200.0 | -673900.0 | -327280.0 | -5772700.0 | -8351600.0 | -5818500.0 |
| Percentage of NetIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.2 | 99.8 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 14 | 16 | 10 | 10 | 10 | 9.412 | 5.407 | 6.598 | 6.426 | 5.846 | 5.185 | 5.4 | 5.2 | 4.104 | 2.76 | 2.6 | 3.0 | 3.296 | 3.123 | 7.9 | 4.6 | 1.779 | 2.745 | 1.467753 | 1.093192 | 0.939283 | 0.91935 | 1.070707 | 0.389878 | 2.139927 | 0.087386 | 0.087386 | 12 | 0.697671 | 0.469486 | 1.227227 | 6.712056 | 0.532511 | 9.211 | 0.040302 | 0.114016 | 0.0 |
| Percentage of ShareBasedCompensation | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 |
| Value | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | -0.3 | 0.4 | 0.2 | 0.4 | 0.1 | 0.1 |
| Percentage of ShareBasedCompensation | 0.0 | 0.0 | 0.9 | 1.1 | 1.8 | 1.5 | 1.6 | 1.7 | -5.8 | 7.4 | 3.8 | 9.7 | 3.6 | 3.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | -159.165 | 77 | 58 | -52.955 | -423.756 | 100 | 26 | 3.495 | 58 | 1.033 | -206.382 | -149.373 | -30.502 | -0.022 | 0.058 | 14 | 25 | 18 | 25 | -0.160272 | -0.002305 | -0.003437 | -1e-06 | -0.012704 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.060737 | -0.003455 | 0.033139 | -0.05 | 0.002981 | 0.0 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 9.616 | 10 | 23 | 17 | 4.975 | 0.637 | 3.426 | 1.234 | 1.433 | 0.824 | 0.295 | 0.463 | 0.418 | 0.022 | -0.058 | 0.263 | 0.025 | 0.798 | 0.74 | 0.725 | 0.054 | 0.002 | 0.151 | 0.072867 | 0.13699 | 0.782143 | 1.426016 | 0.160272 | 0.002305 | 0.003437 | 1e-06 | 0.012704 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.059369 | -0.003455 | -0.016861 | 0.0 | 0.002981 | 0.0 |
| Percentage of PaymentsToAcquirePropertyPlantAndEquipment | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 163 | 50 | 2.958 | 1.166 | 568 | 3.833 | 2.088 | 0.664 | 3.381 | -0.002 | 239 | 12 | 3.36 | 169 | 2.899 | 56 | -0.648 | 0.383 | 0.216 | 0.638345 | 1.82098 | 0.5425 | 21 | 0.0 | 1.25151 | 0.3 | 0.0 | 0.265 | 1.21625 | 0.25 | 2.37 | 2.295 | 0.778 | 0.045 | 0.863137 | 0.7 |
| Percentage of NetCashProvidedByUsedInFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 1000000.0 |
| Percentage of ProceedsFromIssuanceOfLongTermDebt | 0.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2014-03-31 | 2013-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 12 | 9.494712 | 6.889287 | 6.072368 | 6.23315 | 0.63875 | 0.27875 | 9.275 | 1.15 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.369946 | 1.046 | 0.96142 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 10.9 | 11.0 | 14.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.48186 | 0.11895 | 0.7125 | 0.864286 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 11.7 | 1.3 | 10.3 | 14.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.377597 | 0.9629 | 0.804283 | 1.358166 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 10.9 | 10.1 | 11.7 | 22.4 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.4065 | 0.9948 | 0.206 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 11.1 | 10.5 | 3.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.307133 | 1.0863 | 1.1238 | 0.9592 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 10.4 | 11.4 | 16.3 | 15.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 0.2563 | 1.28311 | 0.6907 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 2.0 | 13.5 | 10.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.2911 | 1.5749 | 0.73285 | 1.060666 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 10.2 | 16.6 | 10.6 | 17.5 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.74365 | 0.044 | 0.002 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 13.8 | 0.5 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.072016 | 0.970107 | 0.897625 | 0.8975 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 8.5 | 10.2 | 13.0 | 14.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.309536 | 1.413645 | 0.758109 | 0.93255 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 10.4 | 14.9 | 11.0 | 15.4 |
| Period End | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2014-03-31 | 2013-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 24.35 | 18.08 | 12.0 | 10.25 | 7.42 | 7.24 | 13.87 | 23.1 | 1.09 | 0.03 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 23.7 | 18.08 | 17.04 | 16.37 | 12.0 | 11.64 | 10.89 | 10.4 | 10.25 | 10.15 | 9.66 | 9.34 | 7.42 | 7.33 | 7.28 | 7.34 | 7.24 | 7.13 | 6.75 | 7.15 | 8.12 | 7.31 | 23.1 | 109.0 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 23.88 | 17.62 | 16.66 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 132.1 | 146.8 | 162.5 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 15.57 | 11.06 | 8.99 | 7.83 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 86.1 | 92.2 | 87.7 | 105.5 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 11.26 | 9.7 | 7.86 | 7.52 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 62.3 | 80.8 | 76.7 | 101.3 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 25.32 | 21.79 | 21.24 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 140.0 | 181.6 | 207.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 5.98 | 5.56 | 5.55 | 5.32 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 33.1 | 46.3 | 54.1 | 71.7 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 23.59 | 14.93 | 15.13 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 130.5 | 124.4 | 147.6 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 19.73 | 11.26 | 11.66 | 10.46 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 109.1 | 93.8 | 113.8 | 141.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 35.25 | 42.15 | 117.0 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 195.0 | 351.2 | 1141.5 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 9.6 | 8.44 | 7.55 | 6.99 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 53.1 | 70.3 | 73.7 | 94.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 7.67 | 7.25 | 6.92 | 6.02 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 42.4 | 60.4 | 67.5 | 81.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 11 | 2.352 | 0.053 | 0.075 | 0.378 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of DeferredTaxAssetsNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 |
| Value | 14 | 10 | 6.344 | 4.111 | 0.0 | 0.0 | 0.0 |
| Percentage of UnrecognizedTaxBenefits | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 189 | 128 | 78 | 47 | 41 | 15 | 8.428156 | -3.679022 | -6.957129 |
| Percentage of DeferredTaxAssetsValuationAllowance | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -1880000.0 | 3258000.0 | 526000.0 | 4686000.0 |
| Percentage of AcquisitionsOfPropertyAndEquipmentIncludedInAccountsPayableAndAccruedExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 0 | -1000.0 | 0 | -2000.0 |
| Percentage of CommonStockIssuedFromPreferredStockConversion | 0.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 0 | 1000.0 | 0 | 2000.0 |
| Percentage of CommonStockIssuedFromPreferredStockConversion | 0.0 | -100.0 | 0.0 | -100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 0 | 4.75 | 0 |
| Percentage of ConvertiblePricePerShares | 0.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-03-31 |
| Value | -1728000.0 | 1340000.0 | -3749000.0 | 10000.0 | 5000000.0 | 1000000.0 |
| Percentage of IncreaseDecreaseInOperatingLeaseLiabilities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-03-31 |
| Value | -5895000.0 | -1840000.0 | -1278000.0 | -2461000.0 | -1834000.0 | -1663000.0 | -1709000.0 | -942000.0 | 0 |
| Percentage of IncreaseDecreaseInOperatingLeaseRightOfUseAsset | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-03-31 | 2019-09-30 | 2019-03-31 |
| Value | -2501000.0 | 2660000.0 | 500000.0 | 4500000.0 | 1000000.0 |
| Percentage of IncreaseDecreaseInOperatingLeaseRightOfUseAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | -215000.0 | 2159000.0 | 772000.0 | 206000.0 | -151000.0 | 479000.0 | -1038000.0 | 1056000.0 | 2642000.0 |
| Percentage of IncreaseDecreaseInRightOfUseAssetsFromLeaseModifications | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-01-26 |
| Value | 80000.0 |
| Percentage of MinimumAverageSalary | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-03-31 |
| Value | 122000.0 | 2285000.0 | 2573000.0 | 1671000.0 | 1458000.0 | 1870000.0 | 1989000.0 | 1934000.0 | 1607000.0 | 1424000.0 | 0 |
| Percentage of NonCashLeaseExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2014-06-28 |
| Value | 0 | 0 | 100000.0 | 0 | 0 | 100000.0 | 0 | 0 | 100000.0 |
| Percentage of PaymentsForUpfrontLicensingFee | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 |
| Period End | 2021-02-08 |
| Value | 3.0 |
| Percentage of PercentageOfCommissionOnGrossSaleProceeds | 100.0 |
| Period End | 2021-02-08 |
| Value | 3.0 |
| Percentage of SalesAgreementCommissionMaximumPercentageOfGrossSalesProceeds | 100.0 |
| Period End | 2021-03-31 |
| Value | 461 |
| Percentage of Shortterminvestmentsforsale | 100.0 |
| Period End | 2021-01-26 |
| Value | 80000.0 |
| Percentage of ThresholdAverageSalaryOfFullTimeEmployeesForLoanForgiveness | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -63000.0 | 77000.0 | -136000.0 | -162000.0 | -595000.0 | 692000.0 | -19000.0 | -133000.0 | 234000.0 | 180000.0 |
| Percentage of UnrealizedGainLossOnShortTermInvestments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 31.49 |
| Percentage of WeightedAveragePricePerShare | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 | 2016-09-30 |
| Value | -1000.0 | 0 | -165000.0 | -118000.0 | -119000.0 | -99000.0 | -23000.0 | 71000.0 | 404000.0 | -59000.0 | -62000.0 | 60000.0 | -18000.0 | -275000.0 |
| Percentage of AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 | 2016-09-30 |
| Value | -1000.0 | 0 | -165000.0 | -118000.0 | -119000.0 | -99000.0 | -23000.0 | 71000.0 | 404000.0 | -59000.0 | -62000.0 | 60000.0 | -18000.0 | -275000.0 |
| Percentage of AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 1796000.0 | 2066000.0 | 1506000.0 | 376000.0 | 33000.0 | -50000.0 | -386000.0 | -605000.0 | -1198000.0 | -1232000.0 | -944000.0 | -387000.0 | -1000.0 | 0 | 0 | -18000.0 | 9000.0 | 28000.0 | -5000.0 | -69000.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 497890.0 | 0 | 7598400.0 | -2598400.0 | 0 | 0 | 0 |
| Percentage of AmortizationOfDebtDiscountPremium | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 |
| Value | -49.191 | 65 | -0.981 | -92.304 | 108 | 38 | -24.92 | -38.023 | 28 | -28.059 | 1.414 | -165.279 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2019-12-31 | 2018-12-31 | 2018-09-30 | 2017-12-31 | 2017-09-30 | 2016-12-31 |
| Value | 0 | 1000.0 | 0 | 0 | 0 | 1000.0 | 0 | 0 |
| Percentage of ConversionOfStockAmountConverted1 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 | 2014-09-30 |
| Value | 300000.0 | 400000.0 | 200000.0 | 300000.0 | 308000.0 | 266000.0 | 65221.0 | 5000.0 |
| Percentage of Depreciation | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2012-06-30 | 2012-03-31 |
| Value | 3.878 | -14.401 | 15 | -10.558 | 14 | 4.364 | 2.242 | 2.752 | 5.08 | -3.346 | 1.229 | 1.674 | 0.872 | -0.546 | 3.222 | 0.273 | 1.836 | -0.776 | 1.409 | -1.185 | 3.105 | 0.104 | -0.25 | 0.866 |
| Percentage of IncreaseDecreaseInAccruedLiabilities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 |
| Value | -1029000.0 | -7130000.0 | 6754000.0 | -1130000.0 | -252000.0 | 1316000.0 | 4063000.0 | -1300000.0 | 2107000.0 | -1592000.0 | 1421000.0 | 2248000.0 | -1972000.0 | 368000.0 | -4078000.0 | 1578000.0 | 1021000.0 | 2354000.0 | 1768000.0 | 492000.0 | 589000.0 | -84000.0 | 32000.0 | -133280.0 | 249530.0 | 62749.0 | 24993.0 | -38069.0 | -144130.0 | 49625.0 | 164840.0 | -257.0 | 17285.0 | -875.0 | -12275.0 | -19628.0 | -25422.0 | 20186.0 | -46470.0 | 26000.0 | -7792.0 | 6845.0 |
| Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2014-12-31 | 2014-09-30 |
| Value | 75000.0 | 121000.0 | 137000.0 | 395000.0 | 609000.0 | 1215000.0 | 1542000.0 | 2124000.0 | 2614000.0 | 3036000.0 | 2368000.0 | 1230000.0 | 718000.0 | 362000.0 | 217000.0 | 194000.0 | 204000.0 | 198000.0 | 234000.0 | 221000.0 | 164000.0 | 126000.0 | 77000.0 | 8000.0 | 72735.0 | 1000.0 | 5000.0 |
| Percentage of InvestmentIncomeInterest | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 4.997 | 4.144 | 4.653 | 3.38 | 3.347 | 3.024 | 5.638 | 4.195 | 2.744 | 2.509 |
| Percentage of LeaseCost | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 3380000.0 | 3398000.0 | 3367000.0 | 1652000.0 | 2073000.0 | 1636000.0 | 3724000.0 | 2214000.0 | 1681000.0 | 1594000.0 |
| Percentage of OperatingLeaseCost | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-08-01 |
| Value | 6500.0 |
| Percentage of OperatingLeaseExpense | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-10-19 |
| Value | 2512000.0 | 2322000.0 | 2377000.0 | 1893000.0 | 1906000.0 | 2200000.0 | 2722000.0 | 2500000.0 | 2000000.0 | 1400000.0 | 59000.0 |
| Percentage of OperatingLeasePayments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | -63000.0 | 77000.0 | -136000.0 | -162000.0 | -595000.0 | 692000.0 | -19000.0 | -133000.0 | 234000.0 | 180000.0 | 78000.0 | -117000.0 | -3000.0 | 0 | 0 | 0 | -2000.0 | -27000.0 | -134000.0 | 85000.0 | 10000.0 | 20000.0 | 10000.0 | 38000.0 | 21704.0 | 0 |
| Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 |
| Value | -63000.0 | 77000.0 | -136000.0 | -162000.0 | -595000.0 | 692000.0 | -19000.0 | -133000.0 | 234000.0 | 180000.0 | 78000.0 | -117000.0 | -3000.0 | -134000.0 | 85000.0 | 10000.0 | 20000.0 | 10000.0 |
| Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 |
| Value | 1000.0 | 0 | 165000.0 | 118000.0 | 119000.0 | 98000.0 | 24000.0 | 71000.0 | 42000.0 | 59000.0 | 60000.0 | 62000.0 | 49000.0 | 42000.0 | 1157000.0 | 4000.0 | 288000.0 | 5000.0 | 349000.0 | 0 | 0 | 0 |
| Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 311 | 70 | 236 | 176 | 521 | 12 | 63 |
| Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2019-03-31 | 2018-12-31 | 2018-10-17 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2018-01-31 | 2017-12-31 | 2017-09-25 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-03 | 2015-03-31 | 2014-12-22 | 2014-12-31 | 2014-09-30 | 2013-12-31 | 2013-09-30 | 2013-05-22 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 160 | 42 | 0.0 | -0.35 | 567 | 0.0 | 236 | 236 | 0.0 | -0.093 | 162 | 162 | -0.388 | 53 | 54 | 0.0 | 0.0 | 0.0 | 0.0 | 95 | 0.0 | -0.001 | 0.000162 | 0.0 | 68 | 68 | 32 | 32 | 0.0 | 5.886803 | 0.0 | 1.35 | 1.24001 | 0.0 | 0.0 | 0.0 | 0.0 | 0.25 | 0.0 | 0.0 | 0.828 | 0.045 | 0.845 | 0.7 |
| Percentage of ProceedsFromIssuanceOfCommonStock | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 160 | 42 |
| Percentage of ProceedsFromIssuanceOfCommonStock | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | 161 | 158 | 318 | 141 | 103 | 113 | 94 | 157 | 172 | 91 | 41 | 0.0 | 0.0 | 0.0 | 0.0 | 14 | 25 | 19 | 26 | 26 | 28 | 39 | 54 | 11 | 4.0 | 0.0 |
| Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 |
| Value | 3.712 | 6.479 | 2.959 | 1.516 | 1.237 | 3.951 | 2.207 | 0.762 | 3.405 | 0.069 | 1.593 | 1.538 | 1.198 | 5.63 | 3.062 | 1.908 | 0.415 | 0.231 | 0.148 | 0.241 | 0.237 | 0.0 | 0.189 | 0.066 |
| Percentage of ProceedsFromStockOptionsExercised | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | 0.618 | 45 | 4.667 | 0.0 | 3.426 | 0.667 |
| Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-03-31 | 2019-06-30 | 2019-03-31 | 2015-09-30 |
| Value | 70.35 | 0.6999 | 0 | 0.7078 | 2.1138 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2019-12-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 70.252 | 0 | 0 | 0 | 0 | 2.0028 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-09-30 | 2019-12-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 69.29 | -0.0015 | 0 | 0 | -0.0331 | 1.7085 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 | 2019-06-30 | 2019-03-31 | 2015-12-31 | 2015-09-30 |
| Value | 0.36 | 0.0183 | 0 | 0.0259 | -0.0001 | 0.0157 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2019-12-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 1.8117 | 0 | 0 | 0 | 0.002 | 0.0277 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-09-30 | 2019-12-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 0.2863 | -0.0025 | 0 | 0 | 0 | 0.0227 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 |
| Value | 29.79 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 |
| Value | -2.04 | 26.42 | 0.95 | 0.17 | 0.53 | 15.67 | 0.58 | 0.92 | 0.99 | 6.99 | -0.82 | 0 | -0.26 | 15.52 | 0.12 | 5.81 | 5.98 | 7.36 | 0.03 | 8.97 | 6.19 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 15.31 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice | 100.0 |
| Period End | 2021-03-31 |
| Value | 45.4 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 0.52 | 1.31 | 24.58 | 0.94 | 1.7 | 1.27 | 10.82 | -0.53 | -0.41 | -0.16 | 15.83 | 0.09 | -0.37 | -0.51 | 7.47 | 0.31 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 |
| Value | 14 | 16 | 10 | 10 | 10 | 9.412 | 5.407 | 6.598 | 6.426 | 5.846 | -14.821973 | 5.516 | 5.222 | 4.104 | 2.76 | 2.619 | 3.293 | 3.296 | 3.123 | 8.645 | 5.357 | 1.779 | 2.747 | 2.387 | 1.923 | 1.467 | 1.092 | 0.94 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0.532 | 0.281 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 | 3.7 | 1.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 |
| Value | 12 | 16 | 10 | 10 | 10 | 9.345 | 5.296 | 6.53 | 6.359 | 5.779 | 5.118 | 5.448 | 5.155 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 | 88.7 | 98.3 | 99.4 | 100.0 | 99.6 | 99.3 | 97.9 | 99.0 | 99.0 | 98.9 | -34.5 | 98.8 | 98.7 |
| Period End | 2021-06-30 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 |
| Value | 1.099 | 0.0 | 0.045 | 0.067 | 0.111 | 0.068 | 0.067 | 0.067 | 0.067 | 0.068 | 0.067 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 | 7.6 | 0.0 | 0.4 | 0.7 | 2.1 | 1.0 | 1.0 | 1.1 | -0.5 | 1.2 | 1.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | 5.829 | 7.739 | 5.57 | 5.424 | 5.072 | 5.094 | 2.778 | 3.252 | 3.706 | 3.145 | -8.195278 | 3.261 | 2.841 | 2.104 | 1.826 | 1.566 | 1.397 | 1.909 | 1.674 | 8.005 | 4.764 | 1.194 | 2.548 | 1.533 | 1.114 | 1.08 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 | 40.4 | 45.7 | 54.4 | 50.7 | 48.1 | 54.1 | 51.4 | 49.3 | 57.7 | 53.8 | 55.3 | 59.1 | 54.4 | 51.3 | 66.2 | 59.8 | 42.4 | 57.9 | 53.6 | 92.6 | 88.9 | 67.1 | 92.8 | 64.2 | 57.9 | 73.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 |
| Value | 8.585 | 9.202 | 4.662 | 5.282 | 5.465 | 4.318 | 2.629 | 3.346 | 2.72 | 2.701 | -6.626695 | 2.255 | 2.381 | 2.0 | 0.934 | 1.053 | 1.896 | 1.387 | 1.449 | 0.64 | 0.593 | 0.585 | 0.198 | 0.895 | 0.809 | 0.387 | 0.327 | 0.282 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 | 59.6 | 54.3 | 45.6 | 49.3 | 51.9 | 45.9 | 48.6 | 50.7 | 42.3 | 46.2 | 44.7 | 40.9 | 45.6 | 48.7 | 33.8 | 40.2 | 57.6 | 42.1 | 46.4 | 7.4 | 11.1 | 32.9 | 7.2 | 37.5 | 42.1 | 26.4 | 29.9 | 30.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 39000.0 | 36000.0 | 34000.0 | 26000.0 | 14000.0 | 17000.0 | 21000.0 | 14000.0 | 18000.0 | 19000.0 |
| Percentage of ShortTermLeaseCost | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 970000.0 |
| Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan | 100.0 |
| Period End | 2021-06-30 |
| Value | 970000.0 |
| Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 | 2016-09-30 | 2015-12-31 |
| Value | 2742000.0 | 6479000.0 | 2959000.0 | 1516000.0 | 1237000.0 | 3951000.0 | 2207000.0 | 762000.0 | 3405000.0 | 69000.0 | 1593000.0 | 1537000.0 | 1198000.0 | 5630000.0 | 148000.0 | 241000.0 | 189000.0 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2016-12-31 | 2016-09-30 | 2015-12-31 |
| Value | 2742000.0 | 6479000.0 | 2959000.0 | 1516000.0 | 1237000.0 | 3951000.0 | 2207000.0 | 762000.0 | 3405000.0 | 69000.0 | 1593000.0 | 1537000.0 | 1198000.0 | 5630000.0 | 148000.0 | 241000.0 | 189000.0 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 1578000.0 | 710000.0 | 1252000.0 | 1702000.0 | 1260000.0 | 1371000.0 | 1893000.0 | 1967000.0 | 1045000.0 | 896000.0 |
| Percentage of VariableLeaseCost | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-07-28 | 2021-04-26 | 2021-02-17 | 2020-10-26 |
| Value | 1.5e-05 | 152 | 146 | 146 |
| Percentage of EntityCommonStockSharesOutstanding | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 708 | 131 | 67 | 68 |
| Percentage of AshCashEquivalentsAndShortTermInvestmentsAndRestrictedCashTotal | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 46 | 10 |
| Percentage of AvailableForSaleDebtSecuritiesMaturityRollingAfterOneThroughTwoYearsAmortizedCost | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 46 | 10 |
| Percentage of AvailableForSaleDebtSecuritiesMaturityRollingAfterOneThroughTwoYearsFairValue | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | -1861000.0 | -446000.0 | 105000.0 | 29000.0 | 471000.0 | 1006000.0 | 1830000.0 | 1946000.0 | 1141000.0 |
| Percentage of AvailableForSaleSecuritiesAccumulatedAccretion | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | -267000.0 | -124000.0 | 29000.0 | 45000.0 | 107000.0 | 476000.0 | 907000.0 | 328000.0 |
| Percentage of AvailableForSaleSecuritiesAccumulatedAccretion | 14.3 | 27.8 | 27.6 | 155.2 | 22.7 | 47.3 | 49.6 | 28.7 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | -1594000.0 | -322000.0 | -134000.0 | -16000.0 | 364000.0 | 530000.0 | 923000.0 | 813000.0 |
| Percentage of AvailableForSaleSecuritiesAccumulatedAccretion | 85.7 | 72.2 | -127.6 | -55.2 | 77.3 | 52.7 | 50.4 | 71.3 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 682 | 611 |
| Percentage of CashEquivalentsAndInvestments | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2016-12-31 |
| Value | 13 | 12 | 15 | 10 | 21 | 10 | 4.692 | 5.821 | 4.446 | 2.56 | 3.424 | 4.029 | 3.92 | 4.031 | 3.31 | 0.735 | 1.066 | 0.614 |
| Percentage of ClinicalRelatedExpensesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 1703000.0 | 8153000.0 | 4342000.0 | 7693000.0 | 3408000.0 | 1869000.0 | 17000.0 |
| Percentage of CommercialManufacturingFacilityRelatedCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-01-26 |
| Value | 2000.0 |
| Percentage of DebtInstrumentAmountThatWillBeForgivenByLenderPerFullTimeOrFullTimeEquivalentEmployee | 100.0 |
| Period End | 2021-01-26 |
| Value | 2000.0 |
| Percentage of DebtInstrumentLoanForgivenPerFullTimeEmployeeAmount | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 |
| Value | 250000.0 | 98000.0 |
| Percentage of DeferredTaxAssetsDepreciationAndAmortization | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 |
| Value | 11 | 2.529 |
| Percentage of DeferredTaxAssetsLeaseLiabilities | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 |
| Value | 11 | 2.352 | 0.053 | 0.075 | 0.378 |
| Percentage of DeferredTaxLiabilitiesDepreciationAndAmortization | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2016-12-31 |
| Value | 998000.0 | 963000.0 | 1061000.0 | 1534000.0 | 1465000.0 | 1100000.0 | 866000.0 | 1395000.0 | 790000.0 | 1033000.0 | 825000.0 | 498000.0 | 552000.0 | 926000.0 | 935000.0 | 1236000.0 | 898000.0 | 927000.0 |
| Percentage of LegalAndRelatedServicesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 |
| Value | 74 | 74 | 0.115 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 |
| Value | 74 | 74 | 0.115 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour | 100.0 | 100.0 | 100.0 |
| Period End | 2021-02-08 |
| Value | 36 |
| Percentage of LesseeOperatingLeaseLiabilityToBePaidExcludingOneTimeOptionToExtendLeasePayments | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2016-12-31 |
| Value | 6402000.0 | 4169000.0 | 3266000.0 | 2319000.0 | 3479000.0 | 3527000.0 | 2184000.0 | 2365000.0 | 3410000.0 | 1789000.0 | 2684000.0 | 2442000.0 | 1150000.0 | 626000.0 | 876000.0 | 1352000.0 | 1004000.0 | 437000.0 |
| Percentage of ManufacturingRelatedExpensesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 142 |
| Percentage of OperatingLossCarryForwardsHavingDefiniteExpireLifeValue | 100.0 |
| Period End | 2020-12-31 |
| Value | 520 |
| Percentage of OperatingLossCarryForwardsHavingIndefiniteExpireLifeValue | 100.0 |
| Period End | 2021-02-08 |
| Value | 350 |
| Percentage of SalesAgreementAuthorizedSharesToBeIssuedAmount | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.074685 | 0.074685 | 0.074685 | 0.074685 | 0.074685 | 74 |
| Percentage of SecurityDepositForBenefitOfUtilitiesServiceProvider | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 10 | 7.902 | 9.032 | 7.866 | 7.114 | 4.118 | 6.866 | 5.22 | 3.944 | 2.225 | 4.113 | 2.897 | 2.613 | 1.655 | 2.613 | 1.556 | 1.625 | 1.054 | 1.581 | 0.031 |
| Percentage of AccruedEmployeeBenefitsCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-08-01 |
| Value | 2965.0 |
| Percentage of AreaOfLand | 100.0 |
| Period End | 2020-08-01 | 2019-07-02 | 2019-05-02 | 2018-10-19 | 2016-08-04 |
| Value | 2965.0 | 4500.0 | 1500.0 | 12322.0 | 8733.0 |
| Percentage of AreaOfLand | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 682 | 472 | 562 | 645 | 611 | 193 | 293 | 322 | 327 | 385 | 368 | 179 | 30 | 14 | 40 | 59 | 70 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 360 | 380 | 562 | 645 | 611 | 193 | 293 | 322 | 327 | 385 | 386 | 179 | 30 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of AssetsFairValueDisclosure | 52.8 | 80.5 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 104.9 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 322 | 91 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 14 | 40 | 59 | 70 |
| Percentage of AssetsFairValueDisclosure | 47.2 | 19.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 |
| Value | 562 | 293 | 386 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 19 | 20 | 7.476855 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 104.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 28.4 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 91 | 50 | 120 |
| Percentage of AssetsFairValueDisclosure | 16.4 | 17.4 | 32.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 470 | 242 | 265 |
| Percentage of AssetsFairValueDisclosure | 83.6 | 82.6 | 72.0 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 46 | 49 |
| Percentage of AssetsFairValueDisclosure | 6.9 | 8.8 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | 91 | 224 | 270 | 31 | 50 | 93 | 139 | 120 |
| Percentage of AssetsFairValueDisclosure | 16.4 | 34.8 | 44.3 | 16.4 | 17.4 | 29.0 | 42.6 | 32.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 |
| Value | 313 | 380 | 470 | 421 | 340 | 161 | 242 | 229 | 187 | 265 | 149 | 18 |
| Percentage of AssetsFairValueDisclosure | 45.9 | 80.5 | 83.6 | 65.2 | 55.7 | 83.6 | 82.6 | 71.0 | 57.4 | 72.0 | 83.5 | 62.8 |
| Period End | 2021-06-30 |
| Value | 34 |
| Percentage of AssetsFairValueDisclosure | 5.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 277 | 29 |
| Percentage of AssetsFairValueDisclosure | 40.6 | 6.3 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 11 | 62 |
| Percentage of AssetsFairValueDisclosure | 1.6 | 13.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 |
| Value | 562 | 293 | 386 | 13 | 21 | 29 | 86 | 70 | 60 | 90 | 99 | 99 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 104.9 | 89.8 | 54.1 | 48.8 | 0.0 | 0.0 | 0.0 | 128.4 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 91 | 50 | 120 |
| Percentage of AssetsFairValueDisclosure | 16.4 | 17.4 | 32.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 470 | 242 | 265 |
| Percentage of AssetsFairValueDisclosure | 83.6 | 82.6 | 72.0 |
| Period End | 2021-06-30 |
| Value | 34 |
| Percentage of AssetsFairValueDisclosure | 5.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 277 | 29 |
| Percentage of AssetsFairValueDisclosure | 40.6 | 6.3 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 46 | 49 |
| Percentage of AssetsFairValueDisclosure | 6.9 | 8.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | 11 | 62 | 91 | 224 | 270 | 31 | 50 | 93 | 139 | 120 |
| Percentage of AssetsFairValueDisclosure | 1.6 | 13.1 | 16.4 | 34.8 | 44.3 | 16.4 | 17.4 | 29.0 | 42.6 | 32.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 |
| Value | 313 | 380 | 470 | 421 | 340 | 161 | 242 | 229 | 187 | 265 | 149 | 18 |
| Percentage of AssetsFairValueDisclosure | 45.9 | 80.5 | 83.6 | 65.2 | 55.7 | 83.6 | 82.6 | 71.0 | 57.4 | 72.0 | 83.5 | 62.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 73000.0 | 101000.0 | 50000.0 | 155000.0 | 223000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 44000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 60.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 1000.0 | 16000.0 | 20000.0 | 50000.0 | 44000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 1.4 | 15.8 | 40.0 | 32.3 | 19.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 28000.0 | 85000.0 | 30000.0 | 105000.0 | 179000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 38.4 | 84.2 | 60.0 | 67.7 | 80.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 |
| Value | 40000.0 | 5000.0 | 31000.0 | 3000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 8000.0 | 4000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 20.0 | 80.0 |
| Period End | 2021-06-30 |
| Value | 10000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 25.0 |
| Period End | 2020-12-31 |
| Value | 2000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 6.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 |
| Value | 22000.0 | 1000.0 | 29000.0 | 3000.0 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 55.0 | 20.0 | 93.5 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 619 | 472 | 563 | 646 | 292 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 267 | 29 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 43.2 | 6.3 |
| Period End | 2021-06-30 |
| Value | 27 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 4.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 11 | 62 | 92 | 224 | 50 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 1.8 | 13.1 | 16.4 | 34.8 | 17.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 313 | 380 | 471 | 421 | 241 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 50.6 | 80.5 | 83.6 | 65.2 | 82.7 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 573 | 461 |
| Percentage of AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 573 | 461 |
| Percentage of AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 619 | 472 |
| Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 619 | 472 |
| Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 619 | 472 | 562 | 645 | 293 |
| Percentage of AvailableForSaleSecuritiesDebtSecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 267 | 29 |
| Percentage of AvailableForSaleSecuritiesDebtSecurities | 43.2 | 6.3 |
| Period End | 2021-06-30 |
| Value | 27 |
| Percentage of AvailableForSaleSecuritiesDebtSecurities | 4.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 11 | 62 | 91 | 224 | 50 |
| Percentage of AvailableForSaleSecuritiesDebtSecurities | 1.8 | 13.1 | 16.4 | 34.8 | 17.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 313 | 380 | 470 | 421 | 242 |
| Percentage of AvailableForSaleSecuritiesDebtSecurities | 50.6 | 80.5 | 83.6 | 65.2 | 82.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 573 | 461 | 562 |
| Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 46 | 10 |
| Percentage of AvailableForSaleSecuritiesDebtSecuritiesNoncurrent | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2014-12-31 |
| Value | 610 | 635 | 719 | 385 | 386 | 179 | 30 | 0.0 | 191 | 99 | 103 | 110 | 112 | 44 |
| Percentage of CashCashEquivalentsAndShortTermInvestments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 63 | 74 | 49 | 51 | 151 | 39 | 10 | 26 | 79 | 91 |
| Percentage of CashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 19 | 57 | 17 | 17 | 9.5 | 12 | 3.9 | 54 | 166 | 54 |
| Percentage of CashEquivalentsAtCarryingValue | 31.2 | 77.3 | 35.4 | 33.4 | 6.3 | 31.6 | 38.8 | 206.6 | 207.8 | 59.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 63 | 74 | 49 | 51 | 94 | 39 | 10 | 12 | 68 | 91 |
| Percentage of CashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 | 100.0 | 62.3 | 100.0 | 100.0 | 46.9 | 86.3 | 100.0 |
| Period End | 2021-01-26 |
| Value | 1000000.0 |
| Percentage of DebtInstrumentFaceAmount | 100.0 |
| Period End | 2021-01-26 |
| Value | 1000000.0 |
| Percentage of DebtInstrumentFaceAmount | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 201 | 131 | 78 | 47 | 41 | 19 |
| Percentage of DeferredTaxAssetsGross | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 144 | 95 | 56 | 33 | 23 | 15 | 8.428156 | 3.679022 | 6.957129 |
| Percentage of DeferredTaxAssetsOperatingLossCarryforwards | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 32 | 22 | 14 | 9.323 | 8.167 | 3.736 |
| Percentage of DeferredTaxAssetsTaxCreditCarryforwards | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 11 | 8.851 | 5.823 | 4.568 | 9.562 | 4.064 |
| Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 1866000.0 | 1410000.0 | 1049000.0 | 733000.0 | 139000.0 | 146000.0 |
| Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 118 | 148 | 75 | 78 |
| Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 28 |
| Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 0.3 | 0.2 | 0.5 |
| Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 4.775 | 4.775 | 10 | 6.642 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 0.361 | 0.361 | 6.288 | 5.675 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths | 7.6 | 7.6 | 61.6 | 85.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 4.414 | 4.414 | 3.912 | 0.967 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths | 92.4 | 92.4 | 38.4 | 14.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2018-12-31 |
| Value | 5418000.0 | 8105000.0 | 2201000.0 | 4316000.0 | 6461000.0 | 6461.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 |
| Value | 2334000.0 | 3879000.0 | 1813000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear | 43.1 | 47.9 | 82.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 |
| Value | 3084000.0 | 4226000.0 | 388000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear | 56.9 | 52.1 | 17.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | 7.5 | 7.4 | 8.3 | 7.5 | 0.075 | 7.5 | 7.7 | 7.9 | 0.082 |
| Percentage of OperatingLeaseWeightedAverageDiscountRatePercent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 662 | 426 | 251 | 143 |
| Percentage of OperatingLossCarryforwards | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 128 | 128 | 88 | 66 |
| Percentage of OperatingLossCarryforwards | 19.5 | 30.1 | 35.3 | 46.3 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-06-30 | 2018-12-31 |
| Value | 17 | 17 | 17 | 17 | 17 | 27 | 27 |
| Percentage of PreferredStockLiquidationPreferenceValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2015-12-31 |
| Value | 3000.0 | 3000.0 | 4000.0 | 4000.0 | 4000.0 | 4000.0 | 4000.0 | 4000.0 | 6000.0 | 6000.0 | 6000.0 | 6000.0 | 6000.0 | 7000.0 | 7000.0 | 8000.0 | 8000.0 | 8000.0 | 8000.0 | 8000.0 | 11000.0 | 0 |
| Percentage of PreferredStockValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 |
| Value | 1400000.0 | 800000.0 |
| Percentage of PrepaidExpenseAndOtherAssets | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | 6084000.0 | 6084000.0 | 5525000.0 | 5525000.0 | 5525000.0 | 5525000.0 | 5450000.0 | 5450000.0 | 5450000.0 |
| Percentage of RestrictedCash | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | 1450000.0 | 1450000.0 | 5500000.0 | 5500000.0 | 5500000.0 | 5500000.0 | 5500000.0 | 5500000.0 |
| Percentage of SecurityDeposit | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 |
| Value | 1450000.0 | 1450000.0 | 1450000.0 | 1500000.0 | 1450000.0 | 1450000.0 |
| Percentage of SecurityDeposit | 0.0 | 26.4 | 26.4 | 27.3 | 26.4 | 26.4 |
| Period End | 2021-06-30 |
| Value | 23.87 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue | 100.0 |
| Period End | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 |
| Value | 7.455537 | 7.972159 | 0.336222 | 3.2976 | 3.6446 | 4.0295 | 4.1839 | 6.0 | 6.0 | 6.0 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-06-30 | 2018-03-31 | 2017-12-31 |
| Value | 0.01124 | 0.01124 | 0.15124 | 0.15124 | 0.15124 | 0.15124 | 0.37624 | 0.37624 | 0.54249 | 0.54249 | 0.725267 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant | 0.2 | 0.1 | 45.0 | 4.6 | 4.1 | 3.8 | 9.0 | 6.3 | 9.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.061575 | 0.005962 | 0.089408 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant | 0.8 | 0.1 | 26.6 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 |
| Value | 6.401443 | 4.548959 | 3.11891 | 2.769205 | 2.496695 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.2829 | 0.08875 | 0.502708 | 0.401273 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 20.0 | 2.0 | 16.1 | 14.5 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 0.812887 | 0.248689 | 0.522596 | 0.43437 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 12.7 | 5.5 | 16.8 | 15.7 |
| Period End | 2020-12-31 | 2018-12-31 |
| Value | 0.076787 | 0.007 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 1.2 | 0.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.307133 | 0.945048 | 0.743376 | 0.39 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 20.4 | 20.8 | 23.8 | 14.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 0.012375 | 0.719738 | 0.08125 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 0.2 | 15.8 | 2.6 |
| Period End | 2020-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 0.674672 | 0.12375 | 0.79806 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 10.5 | 4.0 | 28.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 0.12555 | 0.009 | 0.002 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 2.0 | 0.2 | 0.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 0.808228 | 0.830055 | 0.662832 | 0.32379 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 12.6 | 18.2 | 21.3 | 11.7 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 1.300911 | 1.329098 | 0.473398 | 0.421712 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | 20.3 | 29.2 | 15.2 | 15.2 |
| Period End | 2021-03-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 |
| Value | 13.49 | 11.7 | 9.61 | 7.88 | 7.96 | 7.35 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-09-30 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 14.35 | 11.08 | 9.61 | 7.88 | 7.96 | 7.35 | 8.38 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 15.71 | 11.05 | 9.1 | 7.81 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 134.3 | 115.0 | 115.5 | 98.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 11.26 | 9.44 | 7.84 | 7.54 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 96.2 | 98.2 | 99.5 | 94.7 |
| Period End | 2020-12-31 | 2018-12-31 |
| Value | 25.65 | 94.01 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 219.2 | 1193.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 5.98 | 5.56 | 5.56 | 5.43 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 51.1 | 57.9 | 70.6 | 68.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 23.17 | 15.23 | 15.26 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 198.0 | 158.5 | 193.7 |
| Period End | 2020-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 19.59 | 11.05 | 10.9 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 167.4 | 140.2 | 136.9 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 36.54 | 99.12 | 117.0 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 312.3 | 1031.4 | 1484.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 9.54 | 8.45 | 7.55 | 6.94 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 81.5 | 87.9 | 95.8 | 87.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 7.67 | 7.28 | 6.94 | 6.08 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 65.6 | 75.8 | 88.1 | 76.4 |
| Period End | 2021-03-31 | 2020-12-31 | 2017-12-31 | 2016-12-31 |
| Value | 134 | 222 | 2.457 | 1.839 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-09-30 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 94 | 134 | 2.457 | 1.839 | 1.487 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue | 0.0 | 0.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-03-31 | 2020-12-31 | 2017-12-31 | 2016-12-31 | 2014-03-31 | 2013-12-31 | 2010-12-31 |
| Value | 169 | 358 | 6.199 | 3.719 | 1.934373 | 1.176063 | 1.401563 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-09-30 | 2019-12-31 | 2017-12-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 104 | 203 | 149 | 7.186 | 3.719 | 8.06 | 7.688 | 0.185 | 2.347 | 2.874 | 1.176 | 0.217 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue | 0.0 | 0.0 | 0.0 | 115.9 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 |
| Value | 32 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested | 100.0 |
| Period End | 2021-03-31 |
| Value | 34.67 |
| Percentage of SharesIssuedPricePerShare | 100.0 |
