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Earnings Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Computation of Earnings Per Common Share | A summary of the information used in the computation of earnings per common share follows.
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
($ in thousands, except per share data) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income to common shareholders |  | $ | 127,466 |  |  | $ | 115,572 |  |  | $ | 360,501 |  |  | $ | 338,741 |
Net income allocated to participating securities - basic and diluted |  |  | 552 |  |  |  | 772 |  |  |  | 1,559 |  |  |  | 2,366 |
Net income allocated to common shareholders - basic and diluted |  | $ | 126,914 |  |  | $ | 114,800 |  |  | $ | 358,942 |  |  | $ | 336,375 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares - basic |  |  | 84,871 |  |  |  | 86,234 |  |  | $ | 85,509 |  |  | $ | 86,421 |
Dilutive potential common shares |  |  | 582 |  |  |  | 326 |  |  |  | 468 |  |  |  | 229 |
Weighted-average common shares - diluted |  |  | 85,453 |  |  |  | 86,560 |  |  | $ | 85,977 |  |  | $ | 86,650 |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.50 |  |  | $ | 1.33 |  |  | $ | 4.20 |  |  | $ | 3.89 |
Diluted |  | $ | 1.49 |  |  | $ | 1.33 |  |  | $ | 4.17 |  |  | $ | 3.88 |

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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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