| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:CommonStockValue | ███████▇▇▆▅▄▄▃▃▃▃▃▁▁▁▁▁ | 0.003765 | 0.003756 | 0.003737 | 0.003733 | 0.003726 | 0.003707 | 0.003693 | 0.00345 | 0.003433 | 0.00333 | 0.003009 | 0.002683 | 0.002625 | 0.002555 | 0.002549 | 0.002367 | 0.002361 | 0.002354 | 0.001916 | 0.001915 | 0.001915 | 0.001915 | 0.001915 |
| us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted | █▁ | 37.595069 | 37.42945 | NA | NA | 37.10077 | 37.061356 | NA | 34.445489 | 33.801749 | 33.052468 | NA | 26.325904 | 25.791177 | 25.501188 | NA | 23.63404 | 23.595702 | 19.537897 | NA | 19.149906 | 19.149417 | 19.149417 | NA |
| us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | NA | 4.705122 | NA | NA | NA | 4.181778 | NA | NA | NA | 3.281578 | NA | NA | NA | 4.860011 | NA | NA | 2.419337 | 2.444605 | NA | NA | NA | 1.270666 | NA | |
| us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption | NA | 4.385598 | NA | NA | NA | 3.962733 | NA | NA | NA | 3.100209 | NA | NA | NA | 2.760862 | NA | NA | 2.16954 | 2.144808 | NA | NA | NA | 0.998198 | NA | |
| us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSU | NA | 0.303983 | NA | NA | NA | 0.149389 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:Warrant | NA | 0.015541 | NA | NA | NA | 0.069656 | NA | NA | NA | 0.181369 | NA | NA | NA | 2.099149 | NA | NA | 0.249797 | 0.299797 | NA | NA | NA | 0.272468 | NA | |
| us-gaap:EarningsPerShareBasicAndDiluted | ▁▂▂▄▅▁▃▄▆▇▇▇▇█▇▇▇▆▆▆▆▇█ | -0.86 | -0.78 | -0.79 | -0.61 | -0.49 | -0.88 | -0.71 | -0.56 | -0.41 | -0.32 | -0.32 | -0.31 | -0.32 | -0.19 | -0.31 | -0.27 | -0.3 | -0.41 | -0.38 | -0.38 | -0.36 | -0.31 | -0.23 |
| 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 |
|---|
| 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 |
|---|
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AllocatedShareBasedCompensationExpense | █▆█▄▆▄▄▂▂▂▁▁▁▁▁▁▁▂▁▁▁▂▁ | 5.456242 | 3.731097 | 5.605833 | 2.868818 | 4.148025 | 2.13353 | 2.813859 | 1.156435 | 0.888556 | 1.25631 | 0.35308 | 0.392665 | 0.474659 | 0.53457 | 0.536919 | 0.388045 | 0.483631 | 0.663615 | 0.434725 | 0.458468 | 0.482033 | 0.656192 | 0.182361 |
| us-gaap:GainsLossesOnExtinguishmentOfDebt | NA | NA | 0.0 | -1.247012 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 0.0 | |
| us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument axsm:TermLoan2020 | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:GeneralAndAdministrativeExpense | █▆▅▃▄▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁ | 16.344361 | 11.248372 | 10.359507 | 6.331308 | 7.235877 | 4.970057 | 5.222899 | 3.111662 | 2.445077 | 2.818392 | 2.299083 | 2.202679 | 2.439061 | 2.410699 | 1.95021 | 1.82629 | 1.743377 | 1.686814 | 1.818789 | 1.639026 | 1.52922 | 1.356613 | 0.946618 |
| us-gaap:InterestPaidNet | ██▆▃▂▂▂▂▂▁▁▁▁▁ | 1.169167 | 1.14375 | 0.917955 | 0.416836 | 0.383334 | 0.379167 | 0.308339 | 0.383334 | 0.379166 | 0.216667 | 0.186941 | 0.182357 | 0.195801 | 0.206867 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:NetIncomeLoss | ▁▂▂▃▄▁▃▄▆▆▇▇▇█▇▇▇▇▇▇▇▇█ | -32.284209 | -29.25997 | -29.164647 | -22.924815 | -18.326992 | -32.484146 | -24.806984 | -19.135612 | -13.762214 | -10.640376 | -9.597015 | -8.281974 | -8.280916 | -4.805559 | -7.430501 | -6.433536 | -7.084316 | -7.995039 | -7.328938 | -7.194584 | -6.81219 | -5.865941 | -3.364912 |
| us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings | ▁█ | -32.284209 | -29.25997 | NA | -22.924815 | -18.326992 | -32.484146 | NA | -19.135612 | -13.762214 | -10.640376 | NA | -8.281974 | -8.280916 | -4.805559 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OperatingExpenses | █▇▇▅▄█▆▅▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁ | 30.847687 | 27.844061 | 27.744236 | 21.126801 | 17.778834 | 32.491457 | 24.42817 | 18.947235 | 13.448219 | 10.421473 | 9.450315 | 8.243459 | 7.989593 | 7.16321 | 6.44412 | 6.297416 | 6.750738 | 7.672033 | 7.62556 | 7.207803 | 6.82728 | 5.882865 | 3.154533 |
| us-gaap:OperatingIncomeLoss | ▁▂▂▃▃▁▂▃▄▅█▅▅▅▇▅▅▅█▅▅▅▇ | -30.847687 | -27.844061 | -27.744236 | -21.126801 | -17.778834 | -32.491457 | -24.42817 | -18.947235 | -13.448219 | -10.421473 | 9.450315 | -8.243459 | -7.989593 | -7.16321 | 6.44412 | -6.297416 | -6.750738 | -7.672033 | 7.62556 | -7.207803 | -6.82728 | -5.882865 | 3.154533 |
| us-gaap:ProfitLoss | ▁▂▂▃▅▁▃▄▆▇▇▇▇█▇█▇▇ | -32.284209 | -29.25997 | -29.164647 | -22.924815 | -18.326992 | -32.484146 | -24.806984 | -19.135612 | -13.762214 | -10.640376 | -9.597015 | -8.281974 | -8.280916 | -4.805559 | -7.430501 | -6.433536 | -7.084316 | -7.995039 | NA | NA | NA | NA | NA |
| us-gaap:ResearchAndDevelopmentExpense | ▄▅▅▄▃█▆▅▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁ | 14.503326 | 16.595689 | 17.384729 | 14.795493 | 10.542957 | 27.5214 | 19.205271 | 15.835573 | 11.003142 | 7.603081 | 7.151232 | 6.04078 | 5.550532 | 4.752511 | 4.49391 | 4.471126 | 5.007361 | 5.985219 | 5.806771 | 5.568777 | 5.29806 | 4.526252 | 2.207915 |
| 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 |
|---|
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:Assets | ▅▆▇▇▇▇█▂▂▂▁▁▁▁▂▂▂▂▂▂▂▂▂ | 143.26475 | 166.90384 | 186.134323 | 203.629404 | 190.989587 | 197.800871 | 220.54976 | 44.439729 | 54.777766 | 43.901088 | 15.379279 | 16.125828 | 21.725395 | 27.939296 | 35.555564 | 32.618112 | 39.042861 | 46.411558 | 38.212608 | 34.918454 | 40.007913 | 45.148244 | 49.076156 |
| us-gaap:Liabilities | ████▄▄▄▄▃▂▁▁▁▁▂▁▁▁▁ | 71.82813 | 70.610641 | 72.341414 | 68.367646 | 36.746277 | 41.644005 | 41.827371 | 37.617133 | 30.494821 | 26.527389 | 14.441358 | 15.383071 | 14.716496 | 15.353142 | 18.838341 | 15.779055 | 16.288253 | 17.131078 | 16.641157 | NA | NA | NA | 2.631895 |
| us-gaap:LiabilitiesAndStockholdersEquity | ▅▆▇▇▇▇█▂▂▂▁▁▁▁▂▂▂▂▂▂▂▂▂ | 143.26475 | 166.90384 | 186.134323 | 203.629404 | 190.989587 | 197.800871 | 220.54976 | 44.439729 | 54.777766 | 43.901088 | 15.379279 | 16.125828 | 21.725395 | 27.939296 | 35.555564 | 32.618112 | 39.042861 | 46.411558 | 38.212608 | 34.918454 | 40.007913 | 45.148244 | 49.076156 |
| us-gaap:StockholdersEquity | ▄▅▅▆▇▇█▁▂▂▁▁▁▁▂▂▂▂▂▂▂▃▃ | 71.43662 | 96.293199 | 113.792909 | 135.261758 | 154.24331 | 156.156866 | 178.722389 | 6.822596 | 24.282945 | 17.373699 | 0.937921 | 0.742757 | 7.008899 | 12.586154 | 16.717223 | 16.839057 | 22.754608 | 29.28048 | 21.571451 | 28.182918 | 34.904355 | 41.234512 | 46.444261 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AssetsCurrent | ▅▆▇▇▇▇█▂▂▂▁▁▁▁▂▂▂▂▂▂▂▂▂ | 141.654894 | 165.035438 | 184.024826 | 203.272284 | 190.81929 | 197.622778 | 220.379262 | 44.236206 | 54.56805 | 43.759179 | 15.215102 | 15.944433 | 21.539404 | 27.753698 | 35.299541 | 32.419477 | 38.837046 | 46.198751 | 37.999057 | 34.754903 | 39.916623 | 45.065552 | 49.032878 |
| us-gaap:Cash | ▅▆▇▇▇▇█▂▂▂▁▁▁▁▂▂▂▂▂▂▂▂▂ | 141.21909 | 164.660132 | 183.876453 | 202.360292 | 190.682109 | 197.313408 | 219.966167 | 43.641861 | 53.753137 | 42.624487 | 13.968742 | 15.220764 | 20.351443 | 26.632695 | 34.021123 | 31.673383 | 37.994449 | 45.019627 | 36.618497 | 33.887804 | 38.75175 | 44.078 | 48.03626 |
| us-gaap:CashAndCashEquivalentsAtCarryingValue | ▁▅█ | 141.21909 | 164.660132 | 183.876453 | NA | NA | NA | 219.966167 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:PrepaidExpenseAndOtherAssetsCurrent | ▃▂▁▅▁▂▃▄▅▇▇▄▇▇▇▄▅▇█▅▇▆▆ | 0.435804 | 0.375306 | 0.148373 | 0.911992 | 0.137181 | 0.30937 | 0.413095 | 0.594345 | 0.814913 | 1.134692 | 1.24636 | 0.723669 | 1.187961 | 1.121003 | 1.278418 | 0.746094 | 0.842597 | 1.179124 | 1.38056 | 0.867099 | 1.164873 | 0.987552 | 0.996618 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:PropertyPlantAndEquipmentNet | ▆▆▄▃▂▂▂▂▃▃▄▅▅▅▅▆▇▇██▂▂▁ | 0.083444 | 0.074316 | 0.052647 | 0.039745 | 0.030422 | 0.034518 | 0.030623 | 0.034554 | 0.040747 | 0.040393 | 0.051832 | 0.064039 | 0.068635 | 0.070709 | 0.068071 | 0.079344 | 0.086524 | 0.093516 | 0.10073 | 0.104426 | 0.03379 | 0.025192 | 0.016653 |
| us-gaap:OperatingLeaseRightOfUseAsset | ▁▅█ | 1.209037 | 1.476711 | 1.739475 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OtherAssetsNoncurrent | ████▄▄▄▄▄▃▃▃▃▃▅▃▃▃▃▂▂▂▁ | 0.317375 | 0.317375 | 0.317375 | 0.317375 | 0.139875 | 0.143575 | 0.139875 | 0.168969 | 0.168969 | 0.101516 | 0.112345 | 0.117356 | 0.117356 | 0.114889 | 0.187952 | 0.119291 | 0.119291 | 0.119291 | 0.112821 | 0.059125 | 0.0575 | 0.0575 | 0.026625 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AccountsPayableCurrent | ▆█▇▆▅▇▆▅▃▂▂▂▂▂▂▂▂▃▂▂▂▁▁ | 11.611996 | 14.621717 | 13.504022 | 11.315126 | 9.363225 | 12.191714 | 10.943325 | 9.447359 | 6.13712 | 3.434184 | 3.687245 | 4.167369 | 3.175178 | 3.874592 | 3.435456 | 2.942999 | 4.038645 | 4.740702 | 4.081173 | 3.867584 | 3.035038 | 1.830422 | 1.892363 |
| us-gaap:LiabilitiesCurrent | ▇▇▇▆▇██▆▄▃▃▃▃▃▄▃▃▃▂▂▂▁▁ | 22.863668 | 21.682782 | 23.437858 | 20.341538 | 23.001956 | 26.099867 | 24.494745 | 18.508989 | 13.0701 | 7.709797 | 10.821938 | 10.942696 | 9.525984 | 9.420951 | 12.175336 | 8.403616 | 8.21119 | 8.35575 | 7.170712 | 6.735536 | 5.103558 | 3.913732 | 2.631895 |
| us-gaap:OperatingLeaseLiabilityCurrent | ▁▇█ | 1.088841 | 1.196539 | 1.220587 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:OtherAccruedLiabilitiesCurrent | NA | NA | NA | 1.030893 | 1.21242 | 1.126502 | 0.683178 | 0.792288 | 0.531021 | 0.436637 | 0.525613 | 0.475474 | 0.59069 | 0.234751 | 0.332824 | 0.472543 | 0.284555 | 0.399538 | 0.587339 | 0.195059 | 0.168004 | 0.303153 | 0.124768 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:LongTermDebt us-gaap:Range,us-gaap:StatementScenario,us-gaap:DebtInstrument srt:Minimum,axsm:OutstandingAdvancesUnderLoanAgreementEqualsOrExceedsFiftyFiveMillion,axsm:TermLoan2020 | NA | NA | NA | 55.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LongTermDebt us-gaap:Range,us-gaap:StatementScenario,us-gaap:DebtInstrument srt:Minimum,axsm:OutstandingAdvancesUnderLoanAgreementEqualsOrExceedsSixtyFiveMillion,axsm:TermLoan2020 | NA | NA | NA | 65.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LongTermDebtNoncurrent | ████▃▃▃▃▃▃▁▁▁▁▁▂▂▂▂ | 48.882599 | 48.597943 | 48.321848 | 48.026108 | 13.744321 | 15.544138 | 17.332626 | 19.108144 | 17.424721 | 18.817592 | 3.61942 | 4.440375 | 5.190512 | 5.932191 | 6.663005 | 7.375439 | 8.077063 | 8.775328 | 9.470445 | NA | NA | NA | NA |
| us-gaap:OperatingLeaseLiabilityNoncurrent | ▁▄█ | 0.081863 | 0.329916 | 0.581708 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | NA | NA | 0.63 | 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:StockholdersEquity | ▄▅▅▆▇▇█▁▂▂▁▁▁▁▂▂▂▂▂▂▂▃▃ | 71.43662 | 96.293199 | 113.792909 | 135.261758 | 154.24331 | 156.156866 | 178.722389 | 6.822596 | 24.282945 | 17.373699 | 0.937921 | 0.742757 | 7.008899 | 12.586154 | 16.717223 | 16.839057 | 22.754608 | 29.28048 | 21.571451 | 28.182918 | 34.904355 | 41.234512 | 46.444261 |
| us-gaap:CommonStockValue | ███████▇▇▆▅▄▄▃▃▃▃▃▁▁▁▁▁ | 0.003765 | 0.003756 | 0.003737 | 0.003733 | 0.003726 | 0.003707 | 0.003693 | 0.00345 | 0.003433 | 0.00333 | 0.003009 | 0.002683 | 0.002625 | 0.002555 | 0.002549 | 0.002367 | 0.002361 | 0.002354 | 0.001916 | 0.001915 | 0.001915 | 0.001915 | 0.001915 |
| us-gaap:AdditionalPaidInCapital | NA | NA | NA | 384.889471 | 380.946215 | 364.532798 | 354.614189 | 157.907655 | 156.232409 | 135.561052 | 108.485219 | 98.693366 | 96.677592 | 93.974001 | 93.299517 | 85.991032 | 85.473053 | 84.914616 | 69.210986 | 68.493516 | 68.020369 | 65.887336 | 65.231144 | |
| us-gaap:AdditionalPaidInCapitalCommonStock | █▅▁ | 411.773127 | 404.345506 | 392.585265 | NA | NA | NA | 354.614189 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RetainedEarningsAccumulatedDeficit | ▁▂▂▃▃▄▅▅▆▆▆▆▆▇▇▇▇▇▇████ | -340.340272 | -308.056063 | -278.796093 | -249.631446 | -226.706631 | -208.379639 | -175.9 | -151.088509 | -131.952897 | -118.190683 | -107.550307 | -97.953292 | -89.671318 | -81.390402 | -76.584843 | -69.154342 | -62.720806 | -55.63649 | -47.641451 | -40.312513 | -33.117929 | -24.654739 | -18.788798 |
| us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:TypeOfArrangement axsm:LeerinkPartnersLimitedLiabilityCompany,axsm:DecemberTwoThousandNineteenSalesAgreement | ▁█ | 1.1 | 6.3 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:SubsidiarySaleOfStock axsm:ShelfRegistration | NA | NA | NA | 0.0 | 12.4 | 207.4 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | █▁ | 5.456242 | 3.731097 | NA | 2.868818 | 4.148025 | 2.13353 | NA | 1.156435 | 0.888556 | 1.25631 | NA | 0.392665 | 0.474659 | 0.53457 | 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInOperatingActivities | ▂▁▃▄▃▂▄▆▆▆▆▇▆▇▇▇▇▇▇▇▇██ | -25.393553 | -27.215489 | -20.553517 | -15.734586 | -18.895282 | -23.273184 | -17.567151 | -10.626908 | -8.68179 | -9.49921 | -9.793949 | -5.912033 | -7.66728 | -6.680439 | -6.29123 | -6.447402 | -7.096596 | -6.636424 | -7.216675 | -4.802371 | -5.314649 | -3.947609 | -2.250854 |
| us-gaap:NetCashProvidedByUsedInInvestingActivities | ▄▁▃▅█▆██ | -0.018877 | -0.029995 | -0.020287 | -0.014845 | -0.001428 | -0.009331 | -0.001461 | -0.003196 | NA | NA | 0.0 | -0.008481 | -0.009639 | -0.014576 | -1e-06 | -0.003603 | -0.003395 | -0.002899 | -0.006055 | -0.076254 | -0.011601 | -0.010651 | -0.004112 |
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▁▁▁▂▁▁█▁▂▂▁▁▁▁▁▁▁▂▁ | 1.971388 | 8.029163 | 2.089965 | 27.427614 | 12.265411 | 0.629756 | 193.892918 | 0.518828 | 19.821904 | 38.154955 | 8.541927 | 0.789835 | 1.395667 | -0.693413 | 8.638971 | 0.129939 | 0.074813 | 15.040453 | 9.953423 | NA | NA | NA | 45.670359 |
| us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect | ▁▁▁▂▂▁█▁▂▃▂▂▂▂▂ | -23.441042 | -19.216321 | -18.483839 | 11.678183 | -6.631299 | -22.652759 | 176.324306 | -10.111276 | 11.12865 | 28.655745 | -1.252022 | -5.130679 | -6.281252 | -7.388428 | 2.34774 | 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AmortizationOfFinancingCosts | █▁ | 0.149281 | 0.143589 | NA | 0.087425 | 0.119014 | 0.119014 | 0.120321 | 0.120322 | 0.126259 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:IncreaseDecreaseInAccountsPayable | ▁▆▇▆▁▆▆█▇▄▄▅▄▅▅▃▄▅▅▅▆▄▆ | -3.009721 | 1.117695 | 2.188896 | 1.951901 | -2.828489 | 1.248389 | 1.495966 | 3.310239 | 2.702935 | -0.25306 | -0.480124 | 0.992191 | -0.699414 | 0.439136 | 0.492457 | -1.095646 | -0.702057 | 0.659529 | 0.213589 | 0.832546 | 1.204616 | -0.061941 | 1.148338 |
| us-gaap:NetCashProvidedByUsedInOperatingActivities | ▂▁▃▄▃▂▄▆▆▆▆▇▆▇▇▇▇▇▇▇▇██ | -25.393553 | -27.215489 | -20.553517 | -15.734586 | -18.895282 | -23.273184 | -17.567151 | -10.626908 | -8.68179 | -9.49921 | -9.793949 | -5.912033 | -7.66728 | -6.680439 | -6.29123 | -6.447402 | -7.096596 | -6.636424 | -7.216675 | -4.802371 | -5.314649 | -3.947609 | -2.250854 |
| us-gaap:NetIncomeLoss | ▁▂▂▃▄▁▃▄▆▆▇▇▇█▇▇▇▇▇▇▇▇█ | -32.284209 | -29.25997 | -29.164647 | -22.924815 | -18.326992 | -32.484146 | -24.806984 | -19.135612 | -13.762214 | -10.640376 | -9.597015 | -8.281974 | -8.280916 | -4.805559 | -7.430501 | -6.433536 | -7.084316 | -7.995039 | -7.328938 | -7.194584 | -6.81219 | -5.865941 | -3.364912 |
| us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings | ▁█ | -32.284209 | -29.25997 | NA | -22.924815 | -18.326992 | -32.484146 | NA | -19.135612 | -13.762214 | -10.640376 | NA | -8.281974 | -8.280916 | -4.805559 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:ProfitLoss | ▁▂▂▃▅▁▃▄▆▇▇▇▇█▇█▇▇ | -32.284209 | -29.25997 | -29.164647 | -22.924815 | -18.326992 | -32.484146 | -24.806984 | -19.135612 | -13.762214 | -10.640376 | -9.597015 | -8.281974 | -8.280916 | -4.805559 | -7.430501 | -6.433536 | -7.084316 | -7.995039 | NA | NA | NA | NA | NA |
| us-gaap:ShareBasedCompensation | █▆█▄▆▄▄▂▂▂▁▁▁▁▁▁▁▂▁▁▁▂▁ | 5.456242 | 3.731097 | 5.605833 | 2.868818 | 4.148025 | 2.13353 | 2.813859 | 1.156435 | 0.888556 | 1.25631 | 0.35308 | 0.392665 | 0.474659 | 0.53457 | 0.536919 | 0.388045 | 0.483631 | 0.663615 | 0.434725 | 0.458468 | 0.482033 | 0.656192 | 0.182361 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInInvestingActivities | ▄▁▃▅█▆██ | -0.018877 | -0.029995 | -0.020287 | -0.014845 | -0.001428 | -0.009331 | -0.001461 | -0.003196 | NA | NA | 0.0 | -0.008481 | -0.009639 | -0.014576 | -1e-06 | -0.003603 | -0.003395 | -0.002899 | -0.006055 | -0.076254 | -0.011601 | -0.010651 | -0.004112 |
| us-gaap:PaymentsToAcquirePropertyPlantAndEquipment | ▅█▆▄▁▃▁▁ | 0.018877 | 0.029995 | 0.020287 | 0.014845 | 0.001428 | 0.009331 | 0.001461 | 0.003196 | NA | NA | 0.0 | 0.008481 | 0.009639 | 0.014576 | 1e-06 | 0.003603 | 0.003395 | 0.002899 | 0.006055 | 0.076254 | 0.011601 | 0.010651 | 0.004112 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▁▁▁▂▁▁█▁▂▂▁▁▁▁▁▁▁▂▁ | 1.971388 | 8.029163 | 2.089965 | 27.427614 | 12.265411 | 0.629756 | 193.892918 | 0.518828 | 19.821904 | 38.154955 | 8.541927 | 0.789835 | 1.395667 | -0.693413 | 8.638971 | 0.129939 | 0.074813 | 15.040453 | 9.953423 | NA | NA | NA | 45.670359 |
| us-gaap:RepaymentsOfLongTermDebt | NA | NA | 0.0 | NA | NA | NA | 0.0 | 0.0 | 0.0 | 7.238889 | 0.833333 | 0.833333 | 0.833334 | 0.833333 | 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 |
|---|
| 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 |
| Value | 3765.0 | 3756.0 | 3737.0 | 3733.0 | 3726.0 | 3707.0 | 3693.0 | 3450.0 | 3433.0 | 3330.0 | 3009.0 | 2683.0 | 2625.0 | 2555.0 | 2549.0 | 2367.0 | 2361.0 | 2354.0 | 1916.0 | 1915.0 | 1915.0 | 1915.0 | 1915.0 |
| 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 |
| 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 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | 37 | 37 | 37 | 37 | 34 | 33 | 33 | 26 | 25 | 25 | 23 | 23 | 19 | 19 | 19 | 19 | 11 | 11 | 11 |
| 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 |
| Period End | 2021-03-31 | 2020-03-31 | 2019-03-31 | 2018-03-31 | 2017-06-30 | 2017-03-31 | 2016-03-31 | 2015-03-31 |
| Value | 4705100.0 | 4181800.0 | 3281600.0 | 4860000.0 | 2419300.0 | 2444600.0 | 1270700.0 | 2047300.0 |
| Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-03-31 | 2019-03-31 | 2018-03-31 | 2017-06-30 | 2017-03-31 | 2016-03-31 | 2015-03-31 |
| Value | 4385600.0 | 3962700.0 | 3100200.0 | 2760900.0 | 2169500.0 | 2144800.0 | 998200.0 | 709290.0 |
| Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 93.2 | 94.8 | 94.5 | 56.8 | 89.7 | 87.7 | 78.6 | 34.6 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 303980.0 | 149390.0 |
| Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 6.5 | 3.6 |
| Period End | 2021-03-31 | 2020-03-31 | 2019-03-31 | 2018-03-31 | 2017-06-30 | 2017-03-31 | 2016-03-31 | 2015-03-31 |
| Value | 15541.0 | 69656.0 | 181370.0 | 2099100.0 | 249800.0 | 299800.0 | 272470.0 | 272470.0 |
| Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0.3 | 1.7 | 5.5 | 43.2 | 10.3 | 12.3 | 21.4 | 13.3 |
| 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 | -0.86 | -0.78 | -0.79 | -0.61 | -0.49 | -0.88 | -0.71 | -0.56 | -0.41 | -0.32 | -0.32 | -0.31 | -0.32 | -0.19 | -0.31 | -0.27 | -0.3 | -0.41 | -0.38 | -0.38 | -0.36 | -0.31 | -0.23 | -0.41 | -0.19 | -0.19 |
| 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 |
| 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 | 5.456242 | 3.731097 | 5.605833 | 2.868818 | 4.148025 | 2.13353 | 2.813859 | 1.156435 | 0.888556 | 1.25631 | 0.35308 | 0.392665 | 0.474659 | 0.53457 | 0.536919 | 0.388045 | 0.483631 | 0.663615 | 0.434725 | 0.458468 | 0.482033 | 0.656192 | 0.182361 | 0.360745 | 0.185413 | 0.07476 |
| Percentage of AllocatedShareBasedCompensationExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.1 | -2.1 | 6.7 |
| Percentage of AllocatedShareBasedCompensationExpense | 3.5 | -50.6 | 314.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:RestrictedStockUnitsRSU | 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 | 3.153738 | 2.196702 | 4.184543 | 2.008074 | 3.110495 | 1.499155 | 1.88236 | 0.870201 | 0.623825 | 1.154609 | 0.272887 | 0.301774 | 0.344594 | 0.443773 | 0.331367 | 0.260723 | 0.342829 | 0.523662 | 0.261327 | 0.284181 | 0.254839 | 0.115445 | 0.077994 | 0.03719 | 0.034253 | 0.030941 |
| Percentage of AllocatedShareBasedCompensationExpense | 57.8 | 58.9 | 74.6 | 70.0 | 75.0 | 70.3 | 66.9 | 75.2 | 70.2 | 91.9 | 77.3 | 76.9 | 72.6 | 83.0 | 61.7 | 67.2 | 70.9 | 78.9 | 60.1 | 62.0 | 52.9 | 17.6 | 42.8 | 10.3 | 18.5 | 41.4 |
| 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 |
| Percentage of Revenues us-gaap:GeneralAndAdministrativeExpense | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 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 | 2.302504 | 1.534395 | 1.42129 | 0.860744 | 1.03753 | 0.634375 | 0.931499 | 0.286234 | 0.264731 | 0.101701 | 0.080193 | 0.090891 | 0.130065 | 0.090797 | 0.205552 | 0.127322 | 0.140802 | 0.139953 | 0.173398 | 0.174287 | 0.227194 | 0.540747 | 0.104367 | 0.323555 | 0.15116 | 0.043819 |
| Percentage of AllocatedShareBasedCompensationExpense | 42.2 | 41.1 | 25.4 | 30.0 | 25.0 | 29.7 | 33.1 | 24.8 | 29.8 | 8.1 | 22.7 | 23.1 | 27.4 | 17.0 | 38.3 | 32.8 | 29.1 | 21.1 | 39.9 | 38.0 | 47.1 | 82.4 | 57.2 | 89.7 | 81.5 | 58.6 |
| 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 |
| Percentage of Revenues us-gaap:ResearchAndDevelopmentExpense | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 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 | 2020-12-31 | 2020-09-30 | 2015-12-31 | 2015-09-30 |
| Value | 0 | -1247000.0 | 0 | -2444500.0 |
| Percentage of GainsLossesOnExtinguishmentOfDebt | 0.0 | 100.0 | 0.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 |
| Value | 0 |
| Percentage of GainsLossesOnExtinguishmentOfDebt | 0.0 |
| Percentage of Revenues | 0.0 |
| Percentage of Revenues axsm:TermLoan2020 | 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 | 16 | 11 | 10 | 6.331308 | 7.235877 | 4.970057 | 5.222899 | 3.111662 | 2.445077 | 2.818392 | 2.299083 | 2.202679 | 2.439061 | 2.410699 | 1.95021 | 1.82629 | 1.743377 | 1.686814 | 1.818789 | 1.639026 | 1.52922 | 1.356613 | 0.946618 | 0.499421 | 0.45641 | 0.51684 |
| 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 |
| Value | 1169200.0 | 1143800.0 | 917960.0 | 416840.0 | 383330.0 | 379170.0 | 308340.0 | 383330.0 | 379170.0 | 216670.0 | 186940.0 | 182360.0 | 195800.0 | 206870.0 |
| Percentage of InterestPaidNet | 100.0 | 100.0 | 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 |
| 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 | -32284000.0 | -29260000.0 | -29165000.0 | -22925000.0 | -18327000.0 | -32484000.0 | -24807000.0 | -19136000.0 | -13762000.0 | -10640000.0 | -9597000.0 | -8282000.0 | -8280900.0 | -4805600.0 | -7430500.0 | -6433500.0 | -7084300.0 | -7995000.0 | -7328900.0 | -7194600.0 | -6812200.0 | -5865900.0 | -3364900.0 | -4576100.0 | -2129400.0 | -2140100.0 |
| 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 |
| 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 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | -32284000.0 | -29260000.0 | -22925000.0 | -18327000.0 | -32484000.0 | -19136000.0 | -13762000.0 | -10640000.0 | -8282000.0 | -8280900.0 | -4805600.0 |
| 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 |
| 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 |
| 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 |
| 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 | 30 | 27 | 27 | 21 | 17 | 32 | 24 | 18 | 13 | 10 | 9.450315 | 8.243459 | 7.989593 | 7.16321 | 6.44412 | 6.297416 | 6.750738 | 7.672033 | 7.62556 | 7.207803 | 6.82728 | 5.882865 | 3.154533 | 2.023816 | 2.084804 | 1.933123 |
| 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 |
| 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 |
| Value | -30848000.0 | -27844000.0 | -27744000.0 | -21127000.0 | -17779000.0 | -32491000.0 | -24428000.0 | -18947000.0 | -13448000.0 | -10421000.0 | 9450300.0 | -8243500.0 | -7989600.0 | -7163200.0 | 6444100.0 | -6297400.0 | -6750700.0 | -7672000.0 | 7625600.0 | -7207800.0 | -6827300.0 | -5882900.0 | 3154500.0 | -2023800.0 | -2084800.0 | -1933100.0 |
| 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 |
| 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 |
| Value | -32284000.0 | -29260000.0 | -29165000.0 | -22925000.0 | -18327000.0 | -32484000.0 | -24807000.0 | -19136000.0 | -13762000.0 | -10640000.0 | -9597000.0 | -8282000.0 | -8280900.0 | -4805600.0 | -7430500.0 | -6433500.0 | -7084300.0 | -7995000.0 |
| Percentage of ProfitLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 |
| 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 | 14 | 16 | 17 | 14 | 10 | 27 | 19 | 15 | 11 | 7.603081 | 7.151232 | 6.04078 | 5.550532 | 4.752511 | 4.49391 | 4.471126 | 5.007361 | 5.985219 | 5.806771 | 5.568777 | 5.29806 | 4.526252 | 2.207915 | 1.524395 | 1.628394 | 1.416283 |
| 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 |
| 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 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | 0.0 | 0.0 | 10 |
| Percentage of ResearchAndDevelopmentExpense | 0.0 | 0.0 | 0.0 | 37.1 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues axsm:PfizerInc us-gaap:LicenseAgreementTerms | 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 |
| Value | 143 | 166 | 186 | 203 | 190 | 197 | 220 | 44 | 54 | 43 | 15 | 16 | 21 | 27 | 35 | 32 | 39 | 46 | 38 | 34 | 40 | 45 | 49 |
| 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 |
| 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 |
| 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 | 71 | 70 | 72 | 68 | 36 | 41 | 41 | 37 | 30 | 26 | 14 | 15 | 14 | 15 | 18 | 15 | 16 | 17 | 16 | 2.631895 |
| 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 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 50.1 | 42.3 | 38.9 | 33.6 | 19.2 | 21.1 | 19.0 | 84.6 | 55.7 | 60.4 | 93.9 | 95.4 | 67.7 | 55.0 | 53.0 | 48.4 | 41.7 | 36.9 | 43.5 | 5.4 |
| 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 |
| Value | 143 | 166 | 186 | 203 | 190 | 197 | 220 | 44 | 54 | 43 | 15 | 16 | 21 | 27 | 35 | 32 | 39 | 46 | 38 | 34 | 40 | 45 | 49 |
| 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 |
| 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 |
| 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 | 2014-12-31 | 2013-12-31 |
| Value | 71 | 96 | 113 | 135 | 154 | 156 | 178 | 6.822596 | 24 | 17 | 0.937921 | 0.742757 | 7.008899 | 12 | 16 | 16 | 22 | 29 | 21 | 28 | 34 | 41 | 46 | -3.202575 | -2.027811 |
| 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 |
| Percentage of Assets | 49.9 | 57.7 | 61.1 | 66.4 | 80.8 | 78.9 | 81.0 | 15.4 | 44.3 | 39.6 | 6.1 | 4.6 | 32.3 | 45.0 | 47.0 | 51.6 | 58.3 | 63.1 | 56.5 | 80.7 | 87.2 | 91.3 | 94.6 | 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 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 411 | 404 | 392 | 384 | 380 | 364 | 354 | 157 | 156 | 135 | 108 | 98 | 96 | 93 | 93 | 69 | 66 | 5.025533 | 0.205177 |
| Percentage of StockholdersEquity | 576.4 | 419.9 | 345.0 | 284.6 | 247.0 | 233.4 | 198.4 | 2314.5 | 643.4 | 780.3 | 11566.6 | 13287.4 | 1379.4 | 746.6 | 558.1 | 320.8 | 144.0 | -156.9 | -10.1 |
| Percentage of Assets | 287.4 | 242.3 | 210.9 | 189.0 | 199.5 | 184.3 | 160.8 | 355.3 | 285.2 | 308.8 | 705.4 | 612.0 | 445.0 | 336.4 | 262.4 | 181.1 | 136.3 | 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 |
| 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 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 0.003765 | 0.003756 | 0.003737 | 0.003733 | 0.003726 | 0.003707 | 0.003693 | 0.00345 | 0.003433 | 0.00333 | 0.003009 | 0.002683 | 0.002625 | 0.002555 | 0.002549 | 0.001916 | 0.001915 | 0.001111 | 0.000769 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.3 | 0.4 | 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 |
| 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 |
| 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 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | -340.340272 | -308.056063 | -278.796093 | -249.631446 | -226.706631 | -208.379639 | -175.895493 | -151.088509 | -131.952897 | -118.190683 | -107.550307 | -97.953292 | -89.671318 | -81.390402 | -76.584843 | -47.641451 | -20.439798 | -8.229219 | -2.228657 |
| Percentage of StockholdersEquity | -476.4 | -319.9 | -245.0 | -184.6 | -147.0 | -133.4 | -98.4 | -2214.5 | -543.4 | -680.3 | -11466.9 | -13187.8 | -1279.4 | -646.7 | -458.1 | -220.9 | -44.0 | 257.0 | 109.9 |
| Percentage of Assets | -237.6 | -184.6 | -149.8 | -122.6 | -118.7 | -105.3 | -79.8 | -340.0 | -240.9 | -269.2 | -699.3 | -607.4 | -412.7 | -291.3 | -215.4 | -124.7 | -41.6 | 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 |
| 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 |
| Value | 141 | 165 | 184 | 203 | 190 | 197 | 220 | 44 | 54 | 43 | 15 | 15 | 21 | 27 | 35 | 32 | 38 | 46 | 37 | 34 | 39 | 45 | 49 |
| 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 |
| Percentage of Assets | 98.9 | 98.9 | 98.9 | 99.8 | 99.9 | 99.9 | 99.9 | 99.5 | 99.6 | 99.7 | 98.9 | 98.9 | 99.1 | 99.3 | 99.3 | 99.4 | 99.5 | 99.5 | 99.4 | 99.5 | 99.8 | 99.8 | 99.9 |
| 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 | 141 | 164 | 183 | 202 | 190 | 197 | 219 | 43 | 53 | 42 | 13 | 15 | 20 | 26 | 34 | 31 | 37 | 45 | 36 | 33 | 38 | 44 | 48 | 4.620867 | 6.414273 | 1.690433 | 2.617815 | 2.087843 |
| Percentage of Cash | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 98.6 | 98.7 | 98.8 | 99.4 | 99.8 | 99.8 | 99.7 | 98.2 | 98.1 | 97.1 | 90.8 | 94.4 | 93.7 | 95.3 | 95.7 | 97.1 | 97.3 | 97.0 | 95.8 | 97.0 | 96.9 | 97.6 | 97.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 |
| Value | 141 | 164 | 183 | 219 |
| Percentage of CashAndCashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 98.6 | 98.7 | 98.8 | 99.7 |
| 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 | 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 |
| Value | 435800.0 | 375310.0 | 148370.0 | 911990.0 | 137180.0 | 309370.0 | 413100.0 | 594340.0 | 814910.0 | 1134700.0 | 1246400.0 | 723670.0 | 1188000.0 | 1121000.0 | 1278400.0 | 746090.0 | 842600.0 | 1179100.0 | 1380600.0 | 867100.0 | 1164900.0 | 987550.0 | 996620.0 |
| 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 |
| Percentage of Assets | 0.3 | 0.2 | 0.1 | 0.4 | 0.1 | 0.2 | 0.2 | 1.3 | 1.5 | 2.6 | 8.1 | 4.5 | 5.5 | 4.0 | 3.6 | 2.3 | 2.2 | 2.5 | 3.6 | 2.5 | 2.9 | 2.2 | 2.0 |
| 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 |
| Value | 83444.0 | 74316.0 | 52647.0 | 39745.0 | 30422.0 | 34518.0 | 30623.0 | 34554.0 | 40747.0 | 40393.0 | 51832.0 | 64039.0 | 68635.0 | 70709.0 | 68071.0 | 79344.0 | 86524.0 | 93516.0 | 100730.0 | 104430.0 | 33790.0 | 25192.0 | 16653.0 |
| 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 |
| Percentage of Assets | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.3 | 0.4 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.1 | 0.1 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1209000.0 | 1476700.0 | 1739500.0 |
| Percentage of OperatingLeaseRightOfUseAsset | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.8 | 0.9 | 0.9 |
| 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 |
| Value | 317380.0 | 317380.0 | 317380.0 | 317380.0 | 139880.0 | 143580.0 | 139880.0 | 168970.0 | 168970.0 | 101520.0 | 112340.0 | 117360.0 | 117360.0 | 114890.0 | 187950.0 | 119290.0 | 119290.0 | 119290.0 | 112820.0 | 59125.0 | 57500.0 | 57500.0 | 26625.0 |
| 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 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.4 | 0.3 | 0.2 | 0.7 | 0.7 | 0.5 | 0.4 | 0.5 | 0.4 | 0.3 | 0.3 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 |
| 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 |
| Value | 11 | 14 | 13 | 11 | 9.363225 | 12 | 10 | 9.447359 | 6.13712 | 3.434184 | 3.687245 | 4.167369 | 3.175178 | 3.874592 | 3.435456 | 2.942999 | 4.038645 | 4.740702 | 4.081173 | 3.867584 | 3.035038 | 1.830422 | 1.892363 |
| 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 |
| Percentage of Assets | 8.1 | 8.8 | 7.3 | 5.6 | 4.9 | 6.2 | 5.0 | 21.3 | 11.2 | 7.8 | 24.0 | 25.8 | 14.6 | 13.9 | 9.7 | 9.0 | 10.3 | 10.2 | 10.7 | 11.1 | 7.6 | 4.1 | 3.9 |
| 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 |
| Value | 22 | 21 | 23 | 20 | 23 | 26 | 24 | 18 | 13 | 7.709797 | 10 | 10 | 9.525984 | 9.420951 | 12 | 8.403616 | 8.21119 | 8.35575 | 7.170712 | 6.735536 | 5.103558 | 3.913732 | 2.631895 |
| 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 |
| Percentage of Assets | 16.0 | 13.0 | 12.6 | 10.0 | 12.0 | 13.2 | 11.1 | 41.6 | 23.9 | 17.6 | 70.4 | 67.9 | 43.8 | 33.7 | 34.2 | 25.8 | 21.0 | 18.0 | 18.8 | 19.3 | 12.8 | 8.7 | 5.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1088800.0 | 1196500.0 | 1220600.0 |
| Percentage of OperatingLeaseLiabilityCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.8 | 0.7 | 0.7 |
| 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 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 |
| Value | 1030900.0 | 1212400.0 | 1126500.0 | 683180.0 | 792290.0 | 531020.0 | 436640.0 | 525610.0 | 475470.0 | 590690.0 | 234750.0 | 332820.0 | 472540.0 | 284560.0 | 399540.0 | 587340.0 | 195060.0 | 168000.0 | 303150.0 | 124770.0 |
| 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 |
| Percentage of Assets | 0.5 | 0.6 | 0.6 | 0.3 | 1.8 | 1.0 | 1.0 | 3.4 | 2.9 | 2.7 | 0.8 | 0.9 | 1.4 | 0.7 | 0.9 | 1.5 | 0.6 | 0.4 | 0.7 | 0.3 |
| Period End | 2020-09-30 |
| Value | 55 |
| Percentage of LongTermDebt | 100.0 |
| Percentage of Assets | 27.0 |
| Percentage of Assets srt:Minimum axsm:OutstandingAdvancesUnderLoanAgreementEqualsOrExceedsFiftyFiveMillion axsm:TermLoan2020 | 0.0 |
| Period End | 2020-09-30 |
| Value | 65 |
| Percentage of LongTermDebt | 118.2 |
| Percentage of Assets | 31.9 |
| Percentage of Assets srt:Minimum axsm:OutstandingAdvancesUnderLoanAgreementEqualsOrExceedsSixtyFiveMillion axsm:TermLoan2020 | 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 |
| Value | 48 | 48 | 48 | 48 | 13 | 15 | 17 | 19 | 17 | 18 | 3.61942 | 4.440375 | 5.190512 | 5.932191 | 6.663005 | 7.375439 | 8.077063 | 8.775328 | 9.470445 |
| Percentage of LongTermDebtNoncurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 34.1 | 29.1 | 26.0 | 23.6 | 7.2 | 7.9 | 7.9 | 43.0 | 31.8 | 42.9 | 23.5 | 27.5 | 23.9 | 21.2 | 18.7 | 22.6 | 20.7 | 18.9 | 24.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 81863.0 | 329920.0 | 581710.0 |
| Percentage of OperatingLeaseLiabilityNoncurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.1 | 0.2 | 0.3 |
| Period End | 2020-12-31 |
| Value | 630000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | 100.0 |
| Percentage of Assets | 0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1170700.0 | 1526500.0 | 1802300.0 |
| Percentage of OperatingLeaseLiability | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.8 | 0.9 | 1.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1205000.0 | 1580000.0 | 1880000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.8 | 0.9 | 1.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 34296.0 | 53545.0 | 77705.0 |
| Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 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 | 2014-12-31 | 2013-12-31 |
| Value | 71 | 96 | 113 | 135 | 154 | 156 | 178 | 6.822596 | 24 | 17 | 0.937921 | 0.742757 | 7.008899 | 12 | 16 | 16 | 22 | 29 | 21 | 28 | 34 | 41 | 46 | -3.202575 | -2.027811 |
| 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 |
| Percentage of Assets | 49.9 | 57.7 | 61.1 | 66.4 | 80.8 | 78.9 | 81.0 | 15.4 | 44.3 | 39.6 | 6.1 | 4.6 | 32.3 | 45.0 | 47.0 | 51.6 | 58.3 | 63.1 | 56.5 | 80.7 | 87.2 | 91.3 | 94.6 | 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 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 411 | 404 | 392 | 384 | 380 | 364 | 354 | 157 | 156 | 135 | 108 | 98 | 96 | 93 | 93 | 69 | 66 | 5.025533 | 0.205177 |
| Percentage of StockholdersEquity | 576.4 | 419.9 | 345.0 | 284.6 | 247.0 | 233.4 | 198.4 | 2314.5 | 643.4 | 780.3 | 11566.6 | 13287.4 | 1379.4 | 746.6 | 558.1 | 320.8 | 144.0 | -156.9 | -10.1 |
| Percentage of Assets | 287.4 | 242.3 | 210.9 | 189.0 | 199.5 | 184.3 | 160.8 | 355.3 | 285.2 | 308.8 | 705.4 | 612.0 | 445.0 | 336.4 | 262.4 | 181.1 | 136.3 | 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 |
| 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 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 0.003765 | 0.003756 | 0.003737 | 0.003733 | 0.003726 | 0.003707 | 0.003693 | 0.00345 | 0.003433 | 0.00333 | 0.003009 | 0.002683 | 0.002625 | 0.002555 | 0.002549 | 0.001916 | 0.001915 | 0.001111 | 0.000769 |
| Percentage of StockholdersEquity | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.3 | 0.4 | 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 |
| 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 |
| 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 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | -340.340272 | -308.056063 | -278.796093 | -249.631446 | -226.706631 | -208.379639 | -175.895493 | -151.088509 | -131.952897 | -118.190683 | -107.550307 | -97.953292 | -89.671318 | -81.390402 | -76.584843 | -47.641451 | -20.439798 | -8.229219 | -2.228657 |
| Percentage of StockholdersEquity | -476.4 | -319.9 | -245.0 | -184.6 | -147.0 | -133.4 | -98.4 | -2214.5 | -543.4 | -680.3 | -11466.9 | -13187.8 | -1279.4 | -646.7 | -458.1 | -220.9 | -44.0 | 257.0 | 109.9 |
| Percentage of Assets | -237.6 | -184.6 | -149.8 | -122.6 | -118.7 | -105.3 | -79.8 | -340.0 | -240.9 | -269.2 | -699.3 | -607.4 | -412.7 | -291.3 | -215.4 | -124.7 | -41.6 | 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 |
| 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 |
| Value | 3765.0 | 3756.0 | 3737.0 | 3733.0 | 3726.0 | 3707.0 | 3693.0 | 3450.0 | 3433.0 | 3330.0 | 3009.0 | 2683.0 | 2625.0 | 2555.0 | 2549.0 | 2367.0 | 2361.0 | 2354.0 | 1916.0 | 1915.0 | 1915.0 | 1915.0 | 1915.0 |
| 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 |
| 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 |
| 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 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 |
| Value | 384 | 380 | 364 | 354 | 157 | 156 | 135 | 108 | 98 | 96 | 93 | 93 | 85 | 85 | 84 | 69 | 68 | 68 | 65 | 65 |
| 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 |
| Percentage of Assets | 189.0 | 199.5 | 184.3 | 160.8 | 355.3 | 285.2 | 308.8 | 705.4 | 612.0 | 445.0 | 336.4 | 262.4 | 263.6 | 218.9 | 183.0 | 181.1 | 196.2 | 170.0 | 145.9 | 132.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 |
| Value | 411 | 404 | 392 | 354 |
| Percentage of AdditionalPaidInCapitalCommonStock | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 287.4 | 242.3 | 210.9 | 160.8 |
| 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 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 |
| Value | -340340000.0 | -308060000.0 | -278800000.0 | -249630000.0 | -226710000.0 | -208380000.0 | -175900000.0 | -151090000.0 | -131950000.0 | -118190000.0 | -107550000.0 | -97953000.0 | -89671000.0 | -81390000.0 | -76585000.0 | -69154000.0 | -62721000.0 | -55636000.0 | -47641000.0 | -40313000.0 | -33118000.0 | -24655000.0 | -18789000.0 |
| 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 |
| Percentage of Assets | -237.6 | -184.6 | -149.8 | -122.6 | -118.7 | -105.3 | -79.8 | -340.0 | -240.9 | -269.2 | -699.3 | -607.4 | -412.7 | -291.3 | -215.4 | -212.0 | -160.6 | -119.9 | -124.7 | -115.4 | -82.8 | -54.6 | -38.3 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 1.1 | 6.3 |
| Percentage of StockIssuedDuringPeriodValueNewIssues | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 |
| Percentage of Assets axsm:LeerinkPartnersLimitedLiabilityCompany axsm:DecemberTwoThousandNineteenSalesAgreement | 0.0 | 0.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | 12 | 207 |
| Percentage of StockIssuedDuringPeriodValueNewIssues | 0.0 | 0.0 | 0.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 |
| Percentage of Assets axsm:ShelfRegistration | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 5.456242 | 3.731097 | 2.868818 | 4.148025 | 2.13353 | 1.156435 | 0.888556 | 1.25631 | 0.392665 | 0.474659 | 0.53457 |
| 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 |
| 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 | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 5.456242 | 3.731097 | 2.868818 | 4.148025 | 2.13353 | 1.156435 | 0.888556 | 1.25631 | 0.392665 | 0.474659 | 0.53457 |
| 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 |
| 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 | 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 | -25394000.0 | -27215000.0 | -20554000.0 | -15735000.0 | -18895000.0 | -23273000.0 | -17567000.0 | -10627000.0 | -8681800.0 | -9499200.0 | -9793900.0 | -5912000.0 | -7667300.0 | -6680400.0 | -6291200.0 | -6447400.0 | -7096600.0 | -6636400.0 | -7216700.0 | -4802400.0 | -5314600.0 | -3947600.0 | -2250900.0 | -1922500.0 | -2106800.0 | -1158900.0 |
| 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 |
| 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 | 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 | -18877.0 | -29995.0 | -20287.0 | -14845.0 | -1428.0 | -9331.0 | -1461.0 | -3196.0 | 0 | -8481.0 | -9639.0 | -14576.0 | -1.0 | -3603.0 | -3395.0 | -2899.0 | -6055.0 | -76254.0 | -11601.0 | -10651.0 | -4112.0 | -4407.0 | -1420.0 | -10256.0 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 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 | 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 |
| 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 | 1.971388 | 8.029163 | 2.089965 | 27 | 12 | 0.629756 | 193 | 0.518828 | 19 | 38 | 8.541927 | 0.789835 | 1.395667 | -0.693413 | 8.638971 | 0.129939 | 0.074813 | 15 | 9.953423 | 45 |
| 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 |
| 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 |
| 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 |
| Value | -23.441042 | -19.216321 | -18.483839 | 11 | -6.631299 | -22.652759 | 176 | -10.111276 | 11 | 28 | -1.252022 | -5.130679 | -6.281252 | -7.388428 | 2.34774 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect | 100.0 | 100.0 | 100.0 | 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 |
| 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 |
| Value | 149280.0 | 143590.0 | 87425.0 | 119010.0 | 119010.0 | 120320.0 | 120320.0 | 126260.0 |
| Percentage of AmortizationOfFinancingCosts | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 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 |
| Value | 87425.0 | 120320.0 | 120320.0 | 126260.0 | 69665.0 | 56269.0 | 63636.0 | 70177.0 | 76586.0 | 85628.0 | 88074.0 | 87117.0 |
| Percentage of AmortizationOfFinancingCosts | 100.0 | 100.0 | 100.0 | 100.0 | 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 | -3009700.0 | 1117700.0 | 2188900.0 | 1951900.0 | -2828500.0 | 1248400.0 | 1496000.0 | 3310200.0 | 2702900.0 | -253060.0 | -480120.0 | 992190.0 | -699410.0 | 439140.0 | 492460.0 | -1095600.0 | -702060.0 | 659530.0 | 213590.0 | 832550.0 | 1204600.0 | -61941.0 | 1148300.0 | -330420.0 | -167390.0 | 483670.0 |
| 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 | 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 | -25394000.0 | -27215000.0 | -20554000.0 | -15735000.0 | -18895000.0 | -23273000.0 | -17567000.0 | -10627000.0 | -8681800.0 | -9499200.0 | -9793900.0 | -5912000.0 | -7667300.0 | -6680400.0 | -6291200.0 | -6447400.0 | -7096600.0 | -6636400.0 | -7216700.0 | -4802400.0 | -5314600.0 | -3947600.0 | -2250900.0 | -1922500.0 | -2106800.0 | -1158900.0 |
| 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 |
| 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 |
| Value | -32284000.0 | -29260000.0 | -29165000.0 | -22925000.0 | -18327000.0 | -32484000.0 | -24807000.0 | -19136000.0 | -13762000.0 | -10640000.0 | -9597000.0 | -8282000.0 | -8280900.0 | -4805600.0 | -7430500.0 | -6433500.0 | -7084300.0 | -7995000.0 | -7328900.0 | -7194600.0 | -6812200.0 | -5865900.0 | -3364900.0 | -4576100.0 | -2129400.0 | -2140100.0 |
| 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 |
| 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 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | -32284000.0 | -29260000.0 | -22925000.0 | -18327000.0 | -32484000.0 | -19136000.0 | -13762000.0 | -10640000.0 | -8282000.0 | -8280900.0 | -4805600.0 |
| 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 |
| 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 |
| 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 |
| 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 | -32284000.0 | -29260000.0 | -29165000.0 | -22925000.0 | -18327000.0 | -32484000.0 | -24807000.0 | -19136000.0 | -13762000.0 | -10640000.0 | -9597000.0 | -8282000.0 | -8280900.0 | -4805600.0 | -7430500.0 | -6433500.0 | -7084300.0 | -7995000.0 |
| Percentage of ProfitLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 |
| 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 | 5.456242 | 3.731097 | 5.605833 | 2.868818 | 4.148025 | 2.13353 | 2.813859 | 1.156435 | 0.888556 | 1.25631 | 0.35308 | 0.392665 | 0.474659 | 0.53457 | 0.536919 | 0.388045 | 0.483631 | 0.663615 | 0.434725 | 0.458468 | 0.482033 | 0.656192 | 0.182361 | 0.360745 | 0.185413 | 0.07476 |
| 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 |
| 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 | 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 | -18877.0 | -29995.0 | -20287.0 | -14845.0 | -1428.0 | -9331.0 | -1461.0 | -3196.0 | 0 | -8481.0 | -9639.0 | -14576.0 | -1.0 | -3603.0 | -3395.0 | -2899.0 | -6055.0 | -76254.0 | -11601.0 | -10651.0 | -4112.0 | -4407.0 | -1420.0 | -10256.0 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 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 | 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 |
| 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 | 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 | 18877.0 | 29995.0 | 20287.0 | 14845.0 | 1428.0 | 9331.0 | 1461.0 | 3196.0 | 0 | 8481.0 | 9639.0 | 14576.0 | 1.0 | 3603.0 | 3395.0 | 2899.0 | 6055.0 | 76254.0 | 11601.0 | 10651.0 | 4112.0 | 4407.0 | 1420.0 | 10256.0 |
| Percentage of PaymentsToAcquirePropertyPlantAndEquipment | 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 | 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 | 1.971388 | 8.029163 | 2.089965 | 27 | 12 | 0.629756 | 193 | 0.518828 | 19 | 38 | 8.541927 | 0.789835 | 1.395667 | -0.693413 | 8.638971 | 0.129939 | 0.074813 | 15 | 9.953423 | 45 |
| 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 |
| 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 |
| Period End | 2020-12-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 0.0 | 0.0 | 0.0 | 0.0 | 7.238889 | 0.833333 | 0.833333 | 0.833334 | 0.833333 |
| Percentage of RepaymentsOfLongTermDebt | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 0 |
| Percentage of EffectiveIncomeTaxRateContinuingOperations | 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 | 2014-12-31 |
| Value | 26.35 | 24.04 | 16.03 | 16.95 | 17.06 | 16.04 | 10.19 | 9.01 | 7.65 | 7.24 | 5.06 | 4.83 | 4.91 | 5.13 | 5.57 | 5.52 | 5.52 | 5.55 | 5.74 | 5.73 | 5.71 | 3.94 | 3.94 | 2.03 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 107 | 68 | 41 | 28 | 22 | 7.756147 |
| Percentage of DeferredTaxAssetsValuationAllowance | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 84010.0 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharesTenderedForWithholdingTaxes | 100.0 |
| Period End | 2021-06-30 |
| Value | 84010.0 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharesTenderedForWithholdingTaxes | 100.0 |
| Period End | 2021-06-30 |
| Value | 0 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharesTenderedForWithholdingTaxes | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | -355750.0 | -275840.0 |
| Percentage of ChangeInOperatingLeaseLiability | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 2.5 |
| Percentage of DebtInstrumentAggregateAmountPercentage | 0.0 | 100.0 |
| Period End | 2020-09-30 |
| Value | 4.85 |
| Percentage of DebtInstrumentFinalPaymentFeeThresholdPercentageOfDebtOutstanding | 100.0 |
| Period End | 2020-09-30 |
| Value | 2.0 |
| Percentage of DebtInstrumentPrepaymentPenaltyPercentage | 100.0 |
| Period End | 2020-09-30 |
| Value | 1.5 |
| Percentage of DebtInstrumentPrepaymentPenaltyPercentage | 75.0 |
| Period End | 2020-09-30 |
| Value | 1.0 |
| Percentage of DebtInstrumentPrepaymentPenaltyPercentage | 50.0 |
| Period End | 2020-09-30 |
| Value | 1.0 |
| Percentage of DebtInstrumentThresholdCashPayInterestRate | 100.0 |
| Period End | 2020-09-30 |
| Value | 2910000.0 |
| Percentage of ExtinguishmentOfDebtFeeAmount | 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 | 60498.0 | 226930.0 | -763620.0 | 774810.0 | -172190.0 | -103720.0 | -181250.0 | -220570.0 | -319780.0 | -111670.0 | 522690.0 | -464290.0 | 66958.0 | -157420.0 | 532320.0 | -96503.0 | -336530.0 | -201440.0 | 513460.0 | -297770.0 | 177320.0 | -9066.0 | 652210.0 | 91406.0 | 191780.0 | -64724.0 |
| Percentage of IncreaseDecreaseInPrepaidExpenseAndOtherAssetsCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 2020-09-30 |
| Value | 100.0 |
| Percentage of LongTermDebtAdditionalDrawnCovenantMinimumCashToBeMaintainedAsSecurityPercent | 100.0 |
| Period End | 2020-09-30 |
| Value | 65.0 |
| Percentage of LongTermDebtAdditionalDrawnCovenantMinimumCashToBeMaintainedAsSecurityWithMarketCapitalizationCovenantPercent | 100.0 |
| Period End | 2020-09-30 |
| Value | 2000 |
| Percentage of LongTermDebtAdditionalDrawnCovenantMinimumMarketCapitalizationAmount | 100.0 |
| Period End | 2020-09-30 |
| Value | 60.0 |
| Percentage of LongTermDebtAdditionalDrawnMinimumRevenuePercent | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 7155300.0 |
| Percentage of NoncashResearchAndDevelopmentExpense | 0.0 | 0.0 | 0.0 | 100.0 |
| Period End | 2020-09-30 |
| Value | 21 |
| Percentage of ProceedsFromFirstAdvanceUsedToRepayPreviousDebt | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 1.096503 | 6.115864 | 12 | 7.155337 | 19 | 24 | 1.590667 | 2.229002 | 0.13992 |
| Percentage of StockIssuedDuringPeriodValueFinancing | 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 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 1.096501 | 6.115855 | 12 | 7.155329 | 19 | 24 | 1.590612 | 2.228932 | 0.139914 |
| Percentage of StockIssuedDuringPeriodValueFinancing | 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 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 2e-06 | 9e-06 | 1.4e-05 | 8e-06 | 9.5e-05 | 0.000316 | 5.5e-05 | 7e-05 | 6e-06 |
| Percentage of StockIssuedDuringPeriodValueFinancing | 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 | 1.1 | 6.1 |
| Percentage of StockIssuedDuringPeriodValueNewIssuesNet | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2019-09-30 | 2019-06-30 | 2018-09-30 |
| Value | 3.0 | 3.0 | 34990.0 | 144870.0 | 32500.0 |
| Percentage of StockIssuedDuringPeriodValueWarrantsExercised | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2019-09-30 | 2019-06-30 | 2018-09-30 |
| Value | 3.0 | 3.0 | 4.0 | 2.0 | 3.0 |
| Percentage of StockIssuedDuringPeriodValueWarrantsExercised | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 |
| Value | 0 |
| Percentage of StockVestedDuringPeriodValueRestrictedCommonStockAward | 0.0 |
| Period End | 2020-12-31 |
| Value | 0 |
| Percentage of WarrantsExercisedInPeriodWeightedAverageExercisePrice | 0.0 |
| Period End | 2020-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 884220.0 | -39000.0 | 426000.0 |
| Percentage of WarrantsIssuedDuringPeriodDebtFinancing | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 884220.0 | -39000.0 | 426000.0 |
| Percentage of WarrantsIssuedDuringPeriodDebtFinancing | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 0 |
| Percentage of WarrantsIssuedInPeriodWeightedAverageExercisePrice | 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 | 284660.0 | 276100.0 | 295740.0 | 134340.0 | 179010.0 | 177650.0 | 178250.0 | 176920.0 | 187380.0 | 107430.0 | 82055.0 | 88576.0 | 96523.0 | 108480.0 | 117650.0 | 119620.0 | 117610.0 | 115640.0 |
| 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 | 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 |
| Value | 132510.0 | 132510.0 | 151520.0 | 46920.0 | 59998.0 | 58638.0 | 57930.0 | 56602.0 | 61126.0 | 37768.0 | 25787.0 | 24940.0 | 26346.0 | 31895.0 |
| Percentage of AmortizationOfDebtDiscountPremium | 46.6 | 48.0 | 51.2 | 34.9 | 33.5 | 33.0 | 32.5 | 32.0 | 32.6 | 35.2 | 31.4 | 28.2 | 27.3 | 29.4 |
| Period End | 2020-09-30 |
| Value | 5.9 |
| Percentage of DebtInstrumentBasisSpreadOnVariableRate1 | 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 | 9749.0 | 8326.0 | 7382.0 | 5522.0 | 5524.0 | 5436.0 | 5392.0 | 9389.0 | 11110.0 | 11439.0 | 12207.0 | 13077.0 | 11713.0 | 11938.0 | 11274.0 | 10783.0 | 10387.0 | 10113.0 | 9751.0 | 5618.0 | 3003.0 | 2112.0 | 1251.0 | 1122.0 | 865.0 | 304.0 |
| Percentage of Depreciation | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 |
| Value | 4298300.0 | -2848700.0 | -313160.0 | 1934900.0 | -2248300.0 | -1609400.0 | 2536000.0 | 3635100.0 | 1038100.0 | -103450.0 | 455530.0 | 434140.0 | 800580.0 | -526480.0 |
| Percentage of IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities | 100.0 | 100.0 | 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 | 2020-03-31 | 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 |
| Value | 0 | 3700.0 | -29094.0 | 0 | 67453.0 | -10829.0 | -5011.0 | 0 | 2467.0 | -73063.0 | 68661.0 | 0 | 0 | 6470.0 | 53696.0 | 1625.0 | 0 | 30875.0 | 3625.0 |
| Percentage of IncreaseDecreaseInOtherNoncurrentAssets | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 |
| Value | 1156500.0 | 1143800.0 | 1182700.0 | 421000.0 | 379170.0 | 379170.0 | 383330.0 | 379170.0 |
| Percentage of InterestExpenseDebtExcludingAmortization | 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 | -1436500.0 | -1415900.0 | -1474000.0 | -551000.0 | -548160.0 | 7311.0 | -378810.0 | -327820.0 | -314000.0 | -218900.0 | -248700.0 | -270930.0 | -292320.0 | -315350.0 | -340380.0 | -343230.0 | -333580.0 | -323010.0 | -177660.0 | 13219.0 | 15090.0 | 16924.0 | -116400.0 | -279800.0 | -211060.0 | -128780.0 |
| Percentage of InvestmentIncomeNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 267670.0 | 262760.0 |
| Percentage of OperatingLeaseRightOfUseAssetAmortizationExpense | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 0 |
| Percentage of PaymentsOfDebtIssuanceCosts | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 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 |
| Value | 1.096503 | 6.115864 | 2.050507 | 0.0 | 193 | 0.0 | 19 | 24 | 8.921732 | 1.590668 | 2.229001 | 0.13992 | 8.896249 | 0.0 | 14 | 14 |
| Percentage of ProceedsFromIssuanceOfCommonStock | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 |
| Value | 50 |
| Percentage of ProceedsFromIssuanceOfDebt | 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 | 2017-12-31 |
| Value | 958900.0 | 1913300.0 | 39458.0 | 190230.0 | 190410.0 | 629760.0 | 44505.0 | 483840.0 | 205340.0 | 410160.0 | 7500.0 |
| 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 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -3.09 | 74.57 | 41.74 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 0.55 | 49.37 | 2.75 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 2.4 | 45.14 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | -0.52 | 49.26 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -4.53 | 22.2 | 0.04 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 87.76 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -17.14 | 80.72 | -5.72 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -0.67 | 66.72 | 0.23 |
| Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 958900.0 | 1913300.0 | 190230.0 | 190410.0 | 629760.0 | 483840.0 | 205340.0 | 410160.0 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 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 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 958890.0 | 1913300.0 | 190220.0 | 190410.0 | 629750.0 | 483820.0 | 205330.0 | 410160.0 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 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 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 7.0 | 10.0 | 4.0 | 2.0 | 6.0 | 13.0 | 6.0 | 5.0 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 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 |
| Value | 4551900.0 | 3121700.0 | 1155500.0 | 554010.0 |
| Percentage of AccruedGeneralAndAdministrativeCurrent | 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 |
| Value | 2195000.0 | 1183400.0 | 4293500.0 | 5473000.0 | 4432200.0 | 7758000.0 | 8209600.0 | 6625600.0 | 3721900.0 | 3012200.0 | 2266300.0 | 2294300.0 | 1942400.0 | 1697600.0 | 1642200.0 | 1734000.0 | 1703800.0 | 1976400.0 | 1693700.0 | 2293900.0 | 1595500.0 | 1651400.0 | 284060.0 |
| Percentage of AccruedResearchAndDevelopmentCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 5.0 |
| Percentage of BeneficialOwnershipPercentage | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2019-12-31 |
| Value | 444780.0 | 295490.0 | 151910.0 | 7690.0 | 404360.0 |
| Percentage of DebtInstrumentAccretedLiabilityOfFinalPaymentFee | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 |
| Value | 1.15 |
| Percentage of DebtInstrumentCashPayInterestMultiplier | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1765500.0 | 985430.0 | 400950.0 |
| Percentage of DeferredTaxAssetsInterestExpense | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 612970.0 |
| Percentage of DeferredTaxAssetsLeasingArrangements | 100.0 |
| Period End | 2020-09-30 |
| Value | 15 |
| Percentage of LongTermDebtAdditionalDrawnCovenantMinimumCashAsSecurityInterest | 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 | 2016-12-31 | 2015-12-31 |
| Value | 10 | 5.864526 | 8.713249 | 9.026412 | 7.09147 | 9.339721 | 10 | 8.413107 | 4.777958 | 3.739846 | 3.843299 | 2.679534 | 2.820377 | 0.739532 |
| Percentage of AccountsPayableAndOtherAccruedLiabilitiesCurrent | 100.0 | 100.0 | 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 | 2016-12-31 | 2015-12-31 | 2014-12-31 |
| Value | 141 | 164 | 183 | 202 | 190 | 197 | 0.0 | 43 | 53 | 42 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of CashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 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 | 2015-12-31 | 2014-12-31 |
| Value | 80.43 | 80.43 | 80.43 | 80.43 | 7.03 | 7.21 | 7.21 | 7.31 | 7.99 | 6.91 | 6.35 | 5.27 | 5.21 | 5.21 | 5.21 | 4.02 | 3.68 | 3.28 | 3.06 | 2.02 | 1.3 |
| Percentage of ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 | 2017-12-31 |
| Value | 50 | 50 | 50 | 50 | 20 | 20 | 20 | 20 | 20 | 20 | 6.388889 | 7.222222 | 8.055555 | 9.722222 |
| Percentage of DebtInstrumentCarryingAmount | 100.0 | 100.0 | 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 | 2017-12-31 |
| Value | 1562200.0 | 1697600.0 | 1830100.0 | 1981600.0 | 231400.0 | 312570.0 | 405070.0 | 509230.0 | 516780.0 | 664310.0 | 563860.0 | 551490.0 | 468290.0 | 274120.0 |
| Percentage of DebtInstrumentUnamortizedDiscountNoncurrent | 100.0 | 100.0 | 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 | 2019-12-31 |
| Value | 591610.0 | 121880.0 |
| Percentage of DeferredIncomeTaxLiabilities | 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 | 108 | 68 | 41 | 28 | 22 | 7.756147 |
| 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 |
| Value | 52 | 32 | 18 | 12 | 12 | 5.281388 |
| Percentage of DeferredTaxAssetsOperatingLossCarryforwardsDomestic | 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 |
| Value | 86829.0 | 59557.0 | 40927.0 | 49846.0 | 23293.0 |
| Percentage of DeferredTaxAssetsOperatingLossCarryforwardsForeign | 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 | 20 | 11 | 7.981812 | 4.068086 | 1.760274 |
| Percentage of DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal | 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 | 7883.0 | 11401.0 | 8595.0 | 2597.0 |
| Percentage of DeferredTaxAssetsPropertyPlantAndEquipment | 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 | 13 | 10 | 7.651781 | 5.713709 | 3.491251 | 0.004549 |
| Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch | 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 | 7329200.0 | 3485500.0 | 1625600.0 | 1719300.0 | 1450600.0 | 560020.0 |
| Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits | 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 | 968710.0 | 1200800.0 | 732960.0 | 472000.0 | 308010.0 | 149920.0 |
| Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 591610.0 |
| Percentage of DeferredTaxLiabilitiesLeasingArrangements | 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 |
| Value | 3034700.0 | 1165500.0 | 2870300.0 | 2522600.0 | 1446900.0 | 455180.0 | 2056400.0 | 995180.0 | 525020.0 | 291050.0 | 1051400.0 | 617960.0 | 420580.0 | 220750.0 | 704560.0 | 537040.0 | 288350.0 | 159170.0 | 539290.0 | 379000.0 | 305000.0 | 128780.0 | 330710.0 |
| Percentage of EmployeeRelatedLiabilitiesCurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 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 |
| Value | 11 | 12 | 4.1 |
| Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 57 | 54 | 20 |
| Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 |
| Value | 26 |
| Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 |
| Value | 381250.0 | 393960.0 | 393960.0 | 129170.0 |
| Percentage of InterestPayableCurrent | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 630000.0 | 630000.0 | 1250000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 575000.0 | 950000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear | 100.0 | 100.0 |
| Period End | 2020-09-30 |
| Value | 50 |
| Percentage of LineOfCreditFacilityMaximumBorrowingCapacity | 100.0 |
| Period End | 2020-09-30 |
| Value | 60 |
| Percentage of LineOfCreditFacilityMaximumBorrowingCapacity | 120.0 |
| Period End | 2020-09-30 |
| Value | 60 |
| Percentage of LineOfCreditFacilityMaximumBorrowingCapacity | 120.0 |
| Period End | 2020-09-30 |
| Value | 20 |
| Percentage of LineOfCreditFacilityMaximumBorrowingCapacity | 40.0 |
| Period End | 2020-09-30 |
| Value | 35 |
| Percentage of LineOfCreditFacilityMaximumBorrowingCapacity | 70.0 |
| Period End | 2020-09-30 |
| Value | 225 |
| Percentage of LineOfCreditFacilityMaximumBorrowingCapacity | 450.0 |
| Period End | 2020-09-30 |
| Value | 10000000.0 |
| Percentage of LineOfCreditFacilityRemainingBorrowingCapacity | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 |
| Value | 18 | 17 |
| Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 18 | 18 | 19 | 19 |
| Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 19 | 19 | 12 | 12 |
| Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 249 | 154 | 87 |
| Percentage of OperatingLossCarryforwards | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 189 | 94 | 27 |
| Percentage of OperatingLossCarryforwards | 75.9 | 61.0 | 31.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 43.78 | 41.06 | 35.76 | 34.64 | 32.79 | 45.14 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue | 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 | 13.19 | 11.03 | 10.66 | 9.99 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 186 | 248 | 243 | 213 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 145 | 178 | 175 | 142 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 185 | 247 | 243 | 213 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 26.38 | 24.94 | 16.36 | 16.98 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 9400000.0 | 4500000.0 | 500000.0 |
| Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 64.0 | 0.64 | 0.64 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.4 | 0.014 | 0.014 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 2.2 | 2.2 | 2.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 70.0 | 0.7 | 0.7 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 109.4 | 109.4 | 109.4 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.6 | 0.016 | 0.016 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 2.5 | 2.5 | 2.5 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 73.0 | 0.73 | 0.73 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 114.1 | 114.1 | 114.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.8 | 0.018 | 0.018 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 2.8 | 2.8 | 2.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 61.0 | 0.61 | 0.61 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 95.3 | 95.3 | 95.3 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 1.7 | 0.017 | 0.017 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 2.7 | 2.7 | 2.7 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 85.0 | 0.85 | 0.85 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 132.8 | 132.8 | 132.8 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 |
| Value | 3.0 | 0.03 | 0.03 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 4.7 | 4.7 | 4.7 |
| Period End | 2020-12-31 | 2019-12-31 |
| Value | 97.0 | 0.97 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 151.6 | 151.6 |
| Period End | 2020-12-31 | 2019-12-31 |
| Value | 2.8 | 0.028 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 4.4 | 4.4 |
| Period End | 2020-12-31 |
| Value | 88.0 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 137.5 |
| Period End | 2020-12-31 |
| Value | 0.5 |
| Percentage of WarrantsAndRightsOutstandingMeasurementInput | 0.8 |
