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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Components of Calculation of Earnings Per Share | The components of the calculation of earnings per share were as follows:
| 2023 |  | 2022 |  | 2021
| (Dollars and shares in thousands)
Net income | $ | 325,965 |  |  | $ | 340,848 |  |  | $ | 359,081 |
Weighted average number of shares used in: |  |  |  |  |
Basic earnings per share | 108,821 |  |  | 110,465 |  |  | 110,396 |
Dilutive common stock equivalents: |  |  |  |  |
Restricted stock units | 416 |  |  | 566 |  |  | 770 |
Diluted earnings per share | 109,237 |  |  | 111,031 |  |  | 111,166 |

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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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