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Capital Stock, Repurchases of Common Stock (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jul. 31, 2018
Repurchases of Common Stock [Abstract] |  |  |  |
Class A common stock repurchased |  | $ 13,011 | $ 70,045 |
2018 Stock Repurchase Plan [Member] |  |  |  |
Repurchases of Common Stock [Abstract] |  |  |  |
Authorized amount |  |  |  | $ 500,000
Amount available for repurchases | $ 162,400 |  |  |
Treasury Stock [Member] |  |  |  |
Repurchases of Common Stock [Abstract] |  |  |  |
Class A common stock repurchased |  | $ 13,011 | $ 70,045 |
Treasury Stock [Member] | 2018 Stock Repurchase Plan [Member] |  |  |  |
Repurchases of Common Stock [Abstract] |  |  |  |
Class A common stock repurchased (in shares) | 0 | 600,000 | 1,700,000 |
Class A common stock repurchased |  | $ 13,000 | $ 70,000 |

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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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