Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands |
|
1 Months Ended |
12 Months Ended |
|
Jan. 01, 2022 |
Oct. 31, 2018 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Jul. 06, 2018 |
| Share-Based Compensation |
|
|
|
|
|
|
| Stock-based compensation expense |
|
|
$ 15,783
|
$ 35,610
|
$ 33,665
|
|
| Common stock |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Issuance of common stock under employee stock purchase plan (in shares) |
|
|
143,906
|
26,444
|
0
|
|
| Issuance of common stock upon exercise of stock options (in shares) |
|
|
42,228
|
1,933,523
|
1,037,406
|
|
| Executive Officer |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Number of options granted (in shares) |
|
193,400
|
|
|
|
|
| Options exercise price (in dollars per share) |
|
$ 16.43
|
|
|
|
|
| Stock-based compensation, fair value |
|
|
$ 4,300
|
|
|
|
| Share-based Payment Arrangement, Option |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Aggregate intrinsic value of stock options exercised |
|
|
$ 100
|
$ 34,600
|
$ 5,700
|
|
| Weighted average grant-date fair value (per share) |
|
|
$ 2.98
|
$ 10.55
|
$ 4.51
|
|
| Number of options granted (in shares) |
|
|
4,104,403
|
|
|
|
| Options exercise price (in dollars per share) |
|
|
$ 2.32
|
|
|
|
| Issuance of common stock upon exercise of stock options (in shares) |
|
|
42,228
|
|
|
|
| Unrecognized compensation cost |
|
|
$ 6,800
|
|
|
|
| Unrecognized compensation cost expected to be recognized over a weighted average period |
|
|
2 years 2 months 12 days
|
|
|
|
| Market-Based Stock Options |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Aggregate intrinsic value of stock options exercised |
|
|
$ 0
|
|
|
|
| Number of options granted (in shares) |
|
|
0
|
0
|
0
|
|
| Issuance of common stock upon exercise of stock options (in shares) |
|
|
0
|
0
|
0
|
|
| Market based and service based vesting |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Stock-based compensation expense |
|
|
$ 100
|
$ 200
|
$ 600
|
|
| Number of options granted (in shares) |
|
164,400
|
|
|
|
|
| Options exercise price (in dollars per share) |
|
$ 16.43
|
|
|
|
|
| Performance-based vesting |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Stock-based compensation expense |
|
|
$ 1,100
|
1,100
|
$ 0
|
|
| Restricted Stock Units (RSUs) |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Number of options granted (in shares) |
|
|
|
|
0
|
|
| Minimum | Restricted Stock Units (RSUs) |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Vesting period |
|
|
3 years
|
|
|
|
| Maximum | Restricted Stock Units (RSUs) |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Vesting period |
|
|
4 years
|
|
|
|
| 2018 Equity Incentive Plan |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Total number of shares of common stock authorized to issue (in shares) |
|
|
|
|
|
5,708,931
|
| Annual increase of shares reserved for awards (as a percent) |
|
|
|
|
|
4.00%
|
| Number of shares remained available for future issuance (in shares) |
|
|
9,666,433
|
|
|
|
| Increase in number of authorized shares reserved for issuance (in shares) |
3,615,509
|
|
|
|
|
|
| 2018 ESPP |
|
|
|
|
|
|
| Share-Based Compensation |
|
|
|
|
|
|
| Stock-based compensation expense |
|
|
$ 100
|
$ 100
|
$ 0
|
|