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Earnings Per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2023
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 |
|  | March 31, |
($ in thousands, except per share data) |  | 2023 |  |  | 2022 |
Numerator: |  |  |  |  |  |
Net income to common shareholders |  | $ | 126,467 |  |  | $ | 123,478 |
Net income allocated to participating securities - basic and diluted |  |  | 1,358 |  |  |  | 1,918 |
Net income allocated to common shareholders - basic and diluted |  | $ | 125,109 |  |  | $ | 121,560 |
Denominator: |  |  |  |  |  |
Weighted-average common shares - basic |  |  | 86,018 |  |  |  | 86,660 |
Dilutive potential common shares |  |  | 264 |  |  |  | 276 |
Weighted-average common shares - diluted |  |  | 86,282 |  |  |  | 86,936 |
Earnings per common share: |  |  |  |  |  |
Basic |  | $ | 1.45 |  |  | $ | 1.40 |
Diluted |  | $ | 1.45 |  |  | $ | 1.40 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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