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Shareholders' Equity (Narrative) (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 USD ($) vote class $ / shares shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2023 $ / shares shares | Oct. 25, 2021 USD ($)
Class of Stock [Line Items] |  |  |  |  |
Number of classes of common stock | class | 1 |  |  |  |
Stock repurchase program, authorized amount | $ | $ 200,000,000 |  |  |  | $ 200,000,000
Treasury stock, common shares (in shares) | shares | 9,844,746 |  |  | 9,661,845 |
Purchase of treasury shares | $ | $ 14,545,000 | $ 85,065,000 |  |  |
Purchases of common stock (in shares) | shares | 1,022,717 |  | 285,286 |  |
Maximum |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Authorized to repurchase shares in amount | $ | $ 76,000,000 |  |  |  |
Treasury Stock, Common |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Treasury stock, common shares (in shares) | shares | 9,845,000 | 9,675,000 | 8,665,000 | 9,662,000 |
Purchase of treasury shares | $ | $ 14,545,000 | $ 85,065,000 | $ 24,400,000 |  |
Purchases of common stock (in shares) | shares | 182,901 | 1,022,717 |  |  |
2021 And 2022 Share Purchases |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Treasury stock, common shares (in shares) | shares | 1,490,904 |  |  |  |
Purchase of treasury shares | $ | $ 124,000,000 |  |  |  |
Common Class A |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common stock, par or stated value per share (in dollars per share) | $ / shares | $ 0.001 |  |  | $ 0.001 |
Number of votes entitled to shareholders per share of common stock | vote | 1 |  |  |  |
Common Class B |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common stock, par or stated value per share (in dollars per share) | $ / shares | $ 0.001 |  |  |  |

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