Net Loss Per Common Share - Computation of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Numerator: | |||
| Net loss | $ (75,082) | $ (105,314) | $ (94,433) |
| Denominator: | |||
| Weighted-average common shares outstanding, basic and diluted | 78,885,186 | 37,792,365 | 33,554,823 |
| Net loss per share, basic and diluted | $ (0.95) | $ (2.79) | $ (2.81) |