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Earnings Per Share | 12 Months Ended
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Dec. 31, 2025
Earnings Per Share [Abstract] |
Earnings Per Share | Note 16. Earnings Per Share The Company calculates earnings per share using the two-class method. The two-class method allocates net income to each class of common stock and participating security according to common dividends declared and participation rights in undistributed earnings. Participating securities consist of nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents A summary of the information used in the computation of earnings per common share follows.
| Years Ended December 31, |
($ in thousands, except per share data) | 2025 |  | 2024 |  | 2023 |
Numerator: |  |  |  |  |  |
Net income to common shareholders | $ | 486,073 |  | $ | 460,815 |  | $ | 392,602 |
Net income or dividends allocated to participating securities - basic and diluted |  | 2,042 |  |  | 3,027 |  |  | 4,014 |
Net income allocated to common shareholders - basic and diluted | $ | 484,031 |  | $ | 457,788 |  | $ | 388,588 |
Denominator: |  |  |  |  |  |
Weighted-average common shares - basic |  | 84,905 |  |  | 86,346 |  |  | 86,130 |
Dilutive potential common shares |  | 535 |  |  | 302 |  |  | 293 |
Weighted-average common shares - diluted |  | 85,440 |  |  | 86,648 |  |  | 86,423 |
Earnings per common share: |  |  |  |  |  |
Basic | $ | 5.70 |  | $ | 5.30 |  | $ | 4.51 |
Diluted | $ | 5.67 |  | $ | 5.28 |  | $ | 4.50 |
Potential common shares consist of stock options, nonvested performance-based awards, nonvested restricted stock units, and nonvested restricted share awards deferred under the Company’s nonqualified deferred compensation plan. These potential common shares do not enter into the calculation of diluted earnings per share if the impact would be antidilutive, i.e., increase earnings per share or reduce a loss per share. The weighted-average of potentially dilutive common shares that were anti-dilutive totaled 5,394, 16,338 and 100,391 for the years ended December 31, 2025, 2024 and 2023, respectively, and were excluded from the calculation of diluted earnings per common diluted share for the respective periods.

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