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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 05, 2023 | Jan. 31, 2023 | Jan. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2023 | Feb. 28, 2023 | Dec. 31, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  |  |  |  |  |  | 9,102,074
Expected dividend yield (in percent) |  |  |  |  |  |  | 0.00% | 0.00% |  |  |
Weighted-average grant-date fair value of options granted (USD per share) |  |  |  |  |  |  |  | $ 6.26 |  |  |
Intrinsic value of options exercised |  |  |  |  |  |  | $ 6,100 | $ 9,100 |  |  |
Aggregate grant-date fair value of options vested |  |  |  |  |  |  | 6,800 | 8,000 |  |  |
Stock-based compensation expense |  |  |  | $ 7,958 | $ 4,830 |  | 18,670 | 13,011 |  |  |
Stock-based compensation included in capitalized internal-use software |  |  |  |  |  |  | 3,703 | $ 1,808 |  |  |
Cost not yet recognized for stock options, amount |  |  |  | 13,000 |  |  | $ 13,000 |  |  |  |
Cost not yet recognized, period for recognition |  |  |  |  |  |  | 2 years |  |  |  |
ESPP withholding |  |  |  | 1,185 |  |  | $ 1,185 |  |  |  | $ 415
Restricted stock units outstanding |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost not yet recognized for restricted stock units, amount |  |  |  | $ 30,400 |  |  | $ 30,400 |  |  |  |
Employee Stock |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Expected dividend yield (in percent) |  |  |  |  | 0.00% |  | 0.00% | 0.00% |  |  |
2021 Plan |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  |  |  |  | 14,662,500 |  |
Number of additional shares authorized (in shares) | 13,719,000 | 809,916 | 411,399 |  |  |  |  |  |  |  |
Minimum annual additional number of shares authorized (in shares) |  |  |  |  |  | 4,784,100 |  |  |  |  |
Minimum annual additional number of shares authorized, common stock outstanding (in percent) |  |  |  |  |  | 5.00% |  |  |  |  |
2021 Plan | Restricted stock units outstanding | Share-Based Payment Arrangement, Nonemployee |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  | 1 year |  |  |  |
2021 Plan | Employee Stock |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  | 956,800 |  |  | 956,800 |  |  |  |
Number of additional shares authorized (in shares) |  | 667,874 | 607,696 |  |  |  |  |  |  |  |
Stock-based compensation (in shares) |  |  |  |  |  |  | 348,555 |  |  |  |
Stock-based compensation expense |  |  |  | $ 900 | $ 800 |  | $ 2,800 | $ 2,400 |  |  |
Stock-based compensation included in capitalized internal-use software |  |  |  | 200 | 200 |  | 700 | 300 |  |  |
Cost not yet recognized for stock options, amount |  |  |  | 1,800 |  |  | $ 1,800 |  |  |  |
Cost not yet recognized, period for recognition |  |  |  |  |  |  | 1 year |  |  |  |
2021 Plan | Minimum | Restricted stock units outstanding | Share-Based Payment Arrangement, Employee |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  | 1 year |  |  |  |
2021 Plan | Maximum | Restricted stock units outstanding | Share-Based Payment Arrangement, Employee |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  | 4 years |  |  |  |
2011 Equity Incentive Plan (“2011 Plan”) | Options outstanding |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  | 4 years |  |  |  |
Award expiration period |  |  |  |  |  |  | 10 years |  |  |  |
2022 Employee Bonus Plan | Restricted stock units outstanding |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  |  |  |  |  | 288,000 |
Stock-based compensation expense |  |  |  | 1,700 | 700 |  | $ 2,600 | 1,700 |  |  |
Stock-based compensation included in capitalized internal-use software |  |  |  | $ 200 | $ 100 |  | $ 400 | $ 200 |  |  |

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