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Share-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 17, 2021 shares | Jun. 28, 2017 shares | Jun. 30, 2020 shares | Dec. 31, 2021 USD ($) Installments $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 shares | Mar. 11, 2019 shares | Oct. 18, 2017 shares | Oct. 17, 2017 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  |  |  | 8,720,127 |  |  |  |  |
Common stock reserved for issuance |  |  |  | 2,695,224 |  |  |  |  |
Share based compensation options granted |  |  |  | 1,708,709 |  |  |  |  |
Common stock, shares/units issued |  |  |  | 32,393,738 | 29,260,247 |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  |  | $ 0.001 | $ 0.001 |  |  |  |
Compensation expense recognized | $ |  |  |  | $ 0 |  |  |  |  |
Vested and released |  |  |  | 0 |  |  |  |  |
Aggregate intrinsic value of stock options exercised | $ |  |  |  | $ 1,200 | $ 1,200 |  |  |  |
Stock option exercised |  |  |  | 160,674 |  |  |  |  |
Stock Option [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share based compensation options granted |  |  |  |  |  | 100,000 |  |  |
Weighted average grant-date fair value of awards granted | $ / shares |  |  |  | $ 13.37 | $ 7.79 |  |  |  |
Aggregate intrinsic value of stock options exercised | $ |  |  |  | $ 2,300 | $ 2,300 |  |  |  |
Total unrecognized compensation cost related to unvested share-based awards | $ |  |  |  | $ 25,300 |  |  |  |  |
Weighted average period |  |  |  | 2 years 9 months 18 days |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Options vesting period |  |  |  | 3 years 8 months 12 days |  |  |  |  |
Unrecognized compensation expense | $ |  |  |  | $ 8,100 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Equal Monthly Installments | Installments |  |  |  | 4 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Right to Receive Share, Number |  |  |  | 1 |  |  |  |  |
Share based compensation options granted |  |  |  | 516,790 |  |  |  |  |
Granted shares in addition to stock option |  |  |  |  |  | 50,000 |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  |  | $ 0.001 |  |  |  |  |
Vested and released |  |  |  |  |  |  |  |  |
Weighted average grant-date fair value of awards granted | $ / shares |  |  |  | $ 17.06 |  |  |  |  |
Performance-based Vesting Criteria [Member] | Stock Option [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Options vesting period |  |  |  |  |  | 2 years |  |  |
Share based compensation options granted |  |  |  |  |  | 100,000 |  |  |
Performance-based Vesting Criteria [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Options vesting period |  |  |  |  |  | 2 years |  |  |
Granted shares in addition to stock option |  |  |  |  |  | 50,000 |  |  |
Performance-based Vesting Criteria 1 [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Percentage of incentive units vesting |  |  |  |  |  | 25.00% |  |  |
Performance-based Vesting Criteria 2 [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Percentage of incentive units vesting |  |  |  |  |  | 50.00% |  |  |
2017 Plan [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  | 1,785,416 |  |  |  |  |  | 2,696,401 | 1,785,416
Number of shares to be incremented |  |  |  |  |  | 607,324 |  |  |
Percentage of outstanding shares of common stock to be incremented |  |  |  |  |  | 4.00% |  |  |
Share based compensation options granted |  |  |  | 1,161,309 |  |  |  |  |
Common stock, shares/units issued |  |  |  | 2,685,972 |  |  |  |  |
Stock option exercised |  |  |  | 140,537 |  |  |  |  |
2017 Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Exercise price per share of stock options as a percentage of fair market value of share of common stock |  | 100.00% |  |  |  |  |  |  |
2017 Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Options vesting period |  | 10 years |  |  |  |  |  |  |
2019 Inducement Plan [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized |  |  | 700,000 |  |  |  |  |  |
Common stock reserved for issuance |  |  |  |  |  |  | 331,500 |  |
Share based compensation options granted |  |  |  | 547,400 |  |  |  |  |
Common stock, shares/units issued |  |  |  | 9,252 |  |  |  |  |
Stock option exercised |  |  |  | 20,137 |  |  |  |  |
Two Thousands And Seventeen Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized | 3,170,254 |  |  |  |  |  |  |  |

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