Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Numerator: | |||
| Net loss | $ (25,687) | $ (68,876) | $ (55,350) |
| Denominator: | |||
| Weighted-average common shares outstanding, basic (in shares) | 114,328,798 | 101,202,176 | 45,548,511 |
| Weighted‑average common shares outstanding—diluted (in shares) | 114,328,798 | 101,202,176 | 45,548,511 |
| Net loss per share: | |||
| Basic (in dollars per share) | $ (0.22) | $ (0.68) | $ (1.22) |
| Diluted (in dollars per share) | $ (0.22) | $ (0.68) | $ (1.22) |