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Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Feb. 09, 2021 | Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Common Stock |  |  |  |
Common stock, authorized |  | 120,000,000 |  | 120,000,000
Price per share | $ 30.00 |  |  |
Issuance of stock (in shares) | 5,750,000 |  |  |
Net proceeds from issuance of common stock | $ 161,731 | $ 161,731 |  |
Incremental compensation charge |  |  | $ 2,811 |
Maximum | Underwriter option to purchase |  |  |  |
Common Stock |  |  |  |
Additional shares | 750,000 |  |  |
Former Chief Executive Officer, Keith Gottesdiener, M.D. | Minimum |  |  |  |
Common Stock |  |  |  |
Post-termination exercise period for vested options |  |  | 90 days |
Former Chief Executive Officer, Keith Gottesdiener, M.D. | Maximum |  |  |  |
Common Stock |  |  |  |
Post-termination exercise period for vested options |  |  | 2 years |
2017 Employee Stock Purchase Plan |  |  |  |
Common Stock |  |  |  |
Common stock reserved for issuance |  | 10,039,110 |  |
Shares available for future grant |  | 983,993 |  |
2017 Employee Stock Purchase Plan | Equity Option |  |  |  |
Common Stock |  |  |  |
Common stock reserved for issuance |  | 6,365,832 |  |

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