Stockholders' Equity - Equity Incentive Plans (Details) - USD ($)
$ / shares in Units, $ in Thousands |
|
1 Months Ended |
12 Months Ended |
Jun. 07, 2019 |
Jul. 31, 2015 |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Class Of Stock [Line Items] |
|
|
|
|
| Number of common stock shares provided for issuance of stock awards to its employees |
|
|
12,522,000
|
8,196,000
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value |
|
|
$ 419,755
|
$ 10,413
|
| 2019 incentive award plan |
|
|
|
|
| Class Of Stock [Line Items] |
|
|
|
|
| Shares of common stock reserved for issuance |
1,678,571,000
|
|
|
|
| Maximum number of shares of common stock a participant may receive |
275,579,000
|
|
|
|
| Percentage of annual increase in shares reserved for issuance |
5.00%
|
|
|
|
| 2019 incentive award plan and inducement plan |
|
|
|
|
| Class Of Stock [Line Items] |
|
|
|
|
| Number of common stock shares provided for issuance of stock awards to its employees |
|
|
1,842,432,000
|
|
| 2015 plan |
|
|
|
|
| Class Of Stock [Line Items] |
|
|
|
|
| Options expiration term |
|
10 years
|
|
|
| Options vesting period |
|
4 years
|
|
|
| 2015 plan | Private Oncternal |
|
|
|
|
| Class Of Stock [Line Items] |
|
|
|
|
| Number of common stock shares provided for issuance of stock awards to its employees |
|
631,120
|
|
|
| 2019 and 2015 plan |
|
|
|
|
| Class Of Stock [Line Items] |
|
|
|
|
| Weighted average grant date fair value per share of option grants |
|
|
$ 4.35
|
$ 2.53
|