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Share-based Compensation - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | May 23, 2023 | Dec. 31, 2020
Stock Option Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Expected dividend yield | 0.00% | 0.00% | 0.00% |  |
Options outstanding, shares | 1,294,000 | 1,577,000 | 1,167,000 |  | 1,157,000
Stock options vested | 260,625 | 245,500 | 200,625 |  |
Aggregate fair value of stock option vested | $ 51,600,000 | $ 35,800,000 | $ 11,000,000 |  |
Weighted average grant date fair value of stock option awards | $ 194.94 | $ 201.64 | $ 372.05 |  |
Share-based compensation expense recognized | $ 44,800,000 | $ 48,300,000 | $ 32,000,000 |  |
Unrecognized share-based compensation expense | $ 70,800,000 |  |  |  |
Unrecognized compensation expense expected to be recognized | 2 years |  |  |  |
Share-settled Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Aggregate fair value of stock option vested | $ 13,500,000 | 12,300,000 | 3,300,000 |  |
Share-based compensation expense recognized | $ 17,400,000 | $ 13,400,000 | $ 8,000,000 |  |
Unrecognized compensation expense expected to be recognized | 2 years 9 months 18 days |  |  |  |
Restricted stock units outstanding | 185,153 | 120,000 | 105,000 |  | 74,000
Share-settled restricted stock units vested | 36,502 | 28,180 | 17,004 |  |
Number of shares withheld to satisfy tax obligations | 10,440 | 9,467 | 5,857 |  |
Shares issued | 26,062 | 18,713 | 11,147 |  |
Granted, weighted average grant date fair value (in dollars per share) | $ 292.83 | $ 246.17 | $ 736.46 |  |
Unrecognized share-based compensation expense | $ 49,400,000 |  |  |  |
Granted | 123,000 | 60,000 | 58,000 |  |
Share-settled Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Expected dividend yield | 0.00% |  |  |  |
Aggregate fair value of stock option vested | $ 0 |  |  |  |
Unrecognized compensation expense expected to be recognized | 2 years 6 months |  |  |  |
Restricted stock units outstanding | 25,000 | 0 |  |  |
Unrecognized share-based compensation expense | $ 10,000,000 |  |  |  |
Granted | 27,000 |  |  |  |
Class A | Stock Option Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation award expiration period | 10 years |  |  |  |
Vesting period | 4 years |  |  |  |
Options outstanding, shares | 1,293,627 |  |  |  |
2013 Equity Plan | Other Stock-based Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted | 0 | 0 | 9,000 |  |
Outstanding | 10,250 |  |  |  |
2013 Equity Plan | Other Stock Based Awards and Cash Settled RSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense recognized | $ 3,200,000 | $ (500,000) | $ 1,400,000 |  |
Unrecognized compensation expense expected to be recognized | 1 year 1 month 6 days |  |  |  |
Unrecognized share-based compensation expense | $ 1,200,000 |  |  |  |
2013 Equity Plan | Cash Settled RSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted | 0 | 0 | 900 |  |
Outstanding | 250 |  |  |  |
2023 Equity Plan | Share-settled Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 4 years |  |  |  |
2023 Equity Plan | Share-settled Restricted Stock Units | Board of Director |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 1 year |  |  |  |
2023 Equity Plan | Share-settled Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted average grant date fair value of stock option awards | $ 486.18 |  |  |  |
Share-based compensation expense recognized | $ 2,300,000 |  |  |  |
Restricted stock units outstanding | 25,375 |  |  |  |
2023 Equity Plan | Minimum | Share-settled Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of target performance stock unit awards granted | 0.00% |  |  |  |
2023 Equity Plan | Maximum | Share-settled Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of target performance stock unit awards granted | 200.00% |  |  |  |
2023 Equity Plan | Class A |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation, stock authorized |  |  |  | 1,932,703 |
Shares of class A common stock reserved and available for future issuance | 238,593 |  |  |  |
2023 Equity Plan | Class A | Stock Option Awards | Board of Director |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 1 year |  |  |  |
2023 Equity Plan | Class A | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation, stock authorized |  |  |  | 1,732,703 |
2023 Equity Plan | New Shares of Class A Authorized for Issuance |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation, stock authorized |  |  |  | 200,000 |
2021 Employee Stock Purchase Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense recognized | $ 1,900,000 | $ 2,400,000 | $ 2,600,000 |  |
Unrecognized compensation expense expected to be recognized | 2 months 12 days |  |  |  |
Unrecognized share-based compensation expense | $ 300,000 |  |  |  |
Percentage of discounted share purchase right | 15.00% |  |  |  |
2021 Employee Stock Purchase Plan | Class A |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation, stock authorized | 100,000 |  |  |  |
Shares of class A common stock reserved and available for future issuance | 59,607 |  |  |  |
Common stock, shares issued | 19,856 | 15,925 | 4,612 |  |
Share Purchase Price Description | shares are purchased at a price equal to 85% of the lesser of the closing price of the Company’s class A common stock on the first or last business day of the offering period, respectively |  |  |  |
Purchase price of common stock, percentage of fair market value | 85.00% |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used | the intrinsic value of the 15% discounted share purchase rights and the fair value of the look-back provision using the Black-Scholes valuation model, recognized on a straight-line basis over the offering period. The grant date is the offering period commencement date. |  |  |  |

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