Net Loss Per Share - Summary of Antidilutive Securities Excluded From Computation of Earnings Per Share (Detail) - shares |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Anti-dilutive effect | 67,645,441 | 65,590,932 | 67,645,441 | 65,590,932 |
Convertible preferred stock [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Anti-dilutive effect | 59,883,877 | 59,883,877 | 59,883,877 | 59,883,877 |
Options to purchase common stock [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Anti-dilutive effect | 7,471,087 | 4,594,499 | 7,471,087 | 4,594,499 |
Unvested restricted stock [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Anti-dilutive effect | 290,477 | 1,112,556 | 290,477 | 1,112,556 |