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Earnings per Share ("EPS") | 12 Months Ended
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Dec. 31, 2020
Earnings per Share ("EPS") | (11) Earnings per Share (“EPS”) Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding. The computation of diluted EPS assumes the issuance of common shares for all dilutive potential common shares outstanding during the reporting period. The calculation of the basic EPS and the diluted EPS for the years ended December 31, 2020, 2019, and 2018 is set forth in the following table: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net Income | ​ | Shares | ​ | Per Share |
​ | ​ | (Numerator) | ​ | (Denominator) | ​ | Amount |
​ | ​ | (Dollars in Thousands, |
​ | ​ | Except Per Share Amounts) |
December 31, 2020: |  | ​ |  |  |  |  | ​ |  | ​
Basic EPS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common shareholders | ​ | $ | 167,319 |  | 63,725,819 | ​ | $ | 2.63 | ​
Potential dilutive common shares and warrants | ​ |  | — |  | 127,316 | ​ | ​ | ​ | ​
Diluted EPS | ​ | $ | 167,319 |  | 63,853,135 | ​ | $ | 2.62 | ​
December 31, 2019: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic EPS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common shareholders | ​ | $ | 205,104 |  | 65,476,606 | ​ | $ | 3.13 | ​
Potential dilutive common shares and warrants | ​ |  | — |  | 209,078 | ​ | ​ | ​ | ​
Diluted EPS | ​ | $ | 205,104 |  | 65,685,684 | ​ | $ | 3.12 | ​
December 31, 2018: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic EPS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common shareholders | ​ | $ | 215,931 |  | 66,106,580 | ​ | $ | 3.27 | ​
Potential dilutive common shares | ​ |  | — |  | 527,240 | ​ | ​ | ​ | ​
Diluted EPS | ​ | $ | 215,931 |  | 66,633,820 | ​ | $ | 3.24 | ​
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