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Earnings per Share (EPS) (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Net Income and Weighted Average Common Shares Outstanding used in Computations of Basic and Diluted Earnings per Common Share | The following table reconciles the net income and the weighted average common shares outstanding used in the computations of basic and diluted earnings per common share for the years ended December 31:
(In thousands, except per share amounts) |  | 2024 |  | 2023 |  | 2022
Net income |  | $ | 729,403 |  |  | $ | 696,386 |  |  | $ | 831,353 |
Basic weighted average shares outstanding |  | 105,394 |  |  | 106,222 |  |  | 107,205 |
Dilutive effect of nonvested shares |  | 1,156 |  |  | 907 |  |  | 448 |
Diluted weighted average shares outstanding |  | 106,550 |  |  | 107,129 |  |  | 107,653 |
Basic earnings per share |  | $ | 6.92 |  |  | $ | 6.56 |  |  | $ | 7.75 |
Diluted earnings per share |  | $ | 6.85 |  |  | $ | 6.50 |  |  | $ | 7.72 |
Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award | Nonvested performance-based share awards are considered contingently issuable for purposes of the EPS calculation. The 2024, 2023 and 2022 performance-based share awards vest based upon our compounded annual book value per share growth percentage and relative total shareholder return during a three-year performance period. The following table summarizes the performance-based shares issuable if the reporting date was the end of the contingency period.
|  | 2024 Performance-Based Grants |  | 2023 Performance-Based Grants |  | 2022 Performance-Based Grants |  | 2021 Performance-Based Grants
As of December 31, |  | Percent Issuable Relative to Target |  | As a Percent of Shares Issued |  | Percent Issuable Relative to Target |  | As a Percent of Shares Issued |  | Percent Issuable Relative to Target |  | As a Percent of Shares Issued |  | Percent Issuable Relative to Target |  | As a Percent of Shares Issued
2024 |  | 100% |  | 50% |  | 174% |  | 87% |  | 168% |  | 84% |  | (1) |  | (1)
2023 |  |  |  |  |  | 200% |  | 100% |  | 200% |  | 100% |  | 133% |  | 66%
2022 |  |  |  |  |  |  |  |  |  | 131% |  | 66% |  | 100% |  | 50%
(1) The 2021 performance based awards vested at 133% relative to target on March 1, 2024.

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- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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