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Earnings Per Share - Reconciliation of the Numerators and Denominators Used in the Basic and Diluted Per-Share Computations (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Class A common stock |  |  |  |
Income available to stockholders (Basic EPS) |  |  |  |
Allocated net income (numerator) | $ 158,521 | $ 129,967 | $ 444,614 | $ 332,389
Weighted shares (denominator) (in shares) | 46,189,059 | 46,189,037 | 46,189,038 | 46,188,962
Per-share amount (in dollars per share) | $ 3.43 | $ 2.81 | $ 9.63 | $ 7.20
Dilutive effect of stock-based awards |  |  |  |
Allocated net income (numerator) | $ 0 | $ 0 | $ 0 | $ 0
Weighted shares (denominator) (in shares) | 16,655 | 9,532 | 11,163 | 8,893
Assumed conversion of Class B shares |  |  |  |
Allocated net income (numerator) | $ 1,309 | $ 1,073 | $ 3,671 | $ 2,744
Weighted shares (denominator) (in shares) | 6,100,800 | 6,100,800 | 6,100,800 | 6,100,800
Income available to stockholders on equivalent shares (Diluted EPS) |  |  |  |
Allocated net income (numerator) | $ 159,830 | $ 131,040 | $ 448,285 | $ 335,133
Weighted shares (denominator) (in shares) | 52,306,514 | 52,299,369 | 52,301,001 | 52,298,655
Per-share amount (in dollars per share) | $ 3.06 | $ 2.51 | $ 8.57 | $ 6.41
Class B common stock |  |  |  |
Income available to stockholders (Basic EPS) |  |  |  |
Allocated net income (numerator) | $ 1,309 | $ 1,073 | $ 3,671 | $ 2,744
Weighted shares (denominator) (in shares) | 2,542 | 2,542 | 2,542 | 2,542
Per-share amount (in dollars per share) | $ 515 | $ 422 | $ 1,444 | $ 1,079
Income available to stockholders on equivalent shares (Diluted EPS) |  |  |  |
Allocated net income (numerator) | $ 1,309 | $ 1,073 | $ 3,670 | $ 2,744
Weighted shares (denominator) (in shares) | 2,542 | 2,542 | 2,542 | 2,542
Per-share amount (in dollars per share) | $ 515 | $ 422 | $ 1,444 | $ 1,079

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