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Common Stock - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 | May 31, 2022 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024 | Dec. 31, 2023
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Repurchases of Class B Common Stock under approved program |  |  | $ 8,254 |  | $ 45,769 |  |  |
Employee stock purchase plan contributions |  |  | $ 2,971 |  | $ 2,971 |  |  | $ 5,790
Common Stock |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Repurchase of Class B common stock under approved program (in shares) |  |  | 183,056 |  | 912,737 |  |  |
Repurchases of Class B Common Stock under approved program |  |  | $ 2 |  | $ 9 |  |  |
Shares issued in connection with executive bonus plan, net (in shares) |  |  | 88,296 | 34,313 | 256,587 | 171,510 |  |
ESPP |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Employee stock purchase plan contributions |  |  | $ 2,971 |  | $ 2,971 |  |  | $ 5,790
Class B Common Stock |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  | $ 200,000 |  |  |  |  | $ 200,000 |
Stock repurchase program, expiration date | Jun. 30, 2026 | Jun. 30, 2024 |  |  |  |  |  |
Common stock, reserved for future issuance amount |  |  | $ 191,738 |  | $ 191,738 |  |  |
Repurchase of Class B common stock under approved program (in shares) |  |  |  |  | 912,737 | 0 |  |
Repurchases of Class B Common Stock under approved program |  |  |  |  | $ 45,769 |  |  |
Class B Common Stock | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Deferred compensation arrangement with individual, shares issued (in shares) |  |  |  |  | 4,655,277 | 2,845,448 |  |
Shares withheld for tax withholding obligation (in shares) |  |  |  |  | 0 | 935,939 |  |
Share-based compensation tax withholding payment |  |  |  |  |  | $ 38,456 |  |
Shares reserved for future issuance (in shares) |  |  | 4,366,691 |  | 4,366,691 |  |  |
Class B Common Stock | Bonus Plan Incentive |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Share-based compensation tax withholding payment |  |  |  |  |  | $ 5,756 |  |
Shares issued in connection with executive bonus plan, net (in shares) |  |  |  |  | 256,587 |  |  |
Shares withheld for cost of options and tax withholding obligation (in shares) |  |  |  |  | 0 | 135,314 |  |
Shares exercised, net of shares withheld (in shares) |  |  |  |  |  | 171,510 |  |
Class B Common Stock | Stock Option |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Share-based compensation tax withholding payment |  |  |  |  | $ 2,195 | $ 6,408 |  |
Shares withheld for cost of options and tax withholding obligation (in shares) |  |  |  |  | 67,146 |  |  |
Shares exercised, net of shares withheld (in shares) |  |  |  |  | 844,283 |  |  |
Cash used to settle award |  |  |  |  | $ 4,007 |  |  |
Class B Common Stock | Stock Option | Common Stock |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Shares withheld for cost of options and tax withholding obligation (in shares) |  |  |  |  |  | 234,472 |  |
Shares exercised, net of shares withheld (in shares) |  |  |  |  |  | 2,422,082 |  |
Cash used to settle award |  |  |  |  |  | $ 10,590 |  |
Class B Common Stock | ESPP |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Share-based compensation tax withholding payment |  |  |  |  | $ 348 | $ 845 |  |
Shares withheld for cost of options and tax withholding obligation (in shares) |  |  |  |  | 6,859 | 17,484 |  |
Shares issued (in shares) |  |  |  |  | 253,578 | 315,840 |  |
Proceeds from issuance of common stock |  |  |  |  | $ 11,228 | $ 9,988 |  |
Shares purchased (in shares) |  |  |  |  | 260,437 | 333,324 |  |
Shares reserved for future issuance (in shares) |  |  | 24,018,460 |  | 24,018,460 |  |  |

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