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Earnings per Share ("EPS") (Tables) | 12 Months Ended
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Dec. 31, 2022
Schedule of calculation of the basic EPS and the diluted EPS | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net Income | ​ | Shares | ​ | Per Share |
​ | ​ | (Numerator) | ​ | (Denominator) | ​ | Amount |
​ | ​ | (Dollars in Thousands, |
​ | ​ | Except Per Share Amounts) |
December 31, 2022: |  | ​ |  |  |  |  | ​ |  | ​
Basic EPS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common shareholders | ​ | $ | 300,232 |  | 62,658,414 | ​ | $ | 4.79 | ​
Potential dilutive common shares | ​ |  | — |  | 151,820 | ​ | ​ | ​ | ​
Diluted EPS | ​ | $ | 300,232 |  | 62,810,234 | ​ | $ | 4.78 | ​
December 31, 2021: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic EPS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common shareholders | ​ | $ | 253,922 |  | 63,352,737 | ​ | $ | 4.01 | ​
Potential dilutive common shares | ​ |  | — |  | 133,629 | ​ | ​ | ​ | ​
Diluted EPS | ​ | $ | 253,922 |  | 63,486,366 | ​ | $ | 4.00 | ​
December 31, 2020: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic EPS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common shareholders | ​ | $ | 167,319 |  | 63,725,819 | ​ | $ | 2.63 | ​
Potential dilutive common shares | ​ |  | — |  | 127,316 | ​ | ​ | ​ | ​
Diluted EPS | ​ | $ | 167,319 |  | 63,853,135 | ​ | $ | 2.62 | ​

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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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