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Retirement Plans - Narrative (Details) - Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Defined Contribution Plan Disclosure [Line Items] |  |  |
Deferred compensation plan expense | $ 5,799,000 | $ 4,146,000 |
DCP participant deferrals | 58,000 | 1,533,000 |
Contributions by employer | $ 0 | $ 0 |
Class B Common Stock |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Phantom shares issuable (in shares) | 16,847,673 |  | 17,364,980
Shares reserved for future issuance (in shares) | 4,401,185 |  |

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