Fair Value Measurements - Additional Information (Details) - USD ($) |
6 Months Ended | |||
---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Mar. 24, 2020 |
Dec. 31, 2019 |
|
Fair Value Disclosures [Abstract] | ||||
Financial instruments | $ 0 | |||
Transfers within hierarchy | $ 0 | $ 0 | ||
Preferred stock tranche rights liability | $ 0 | $ 5,400,000 | ||
Anti-dilution warrants | $ 0 |