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Earnings Per Common Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Common Share |
Earnings Per Common Share | Note 14—Earnings Per Common Share ​ The following table sets forth the computation of basic and diluted earnings per common share: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
(Dollars and shares in thousands, except for per share amounts) | ​ | 2021 | ​ | 2020 | ​ | 2019
Basic earnings per common share: |  | ​ |  |  | ​ |  |  | ​ |
Net income | ​ | $ | 475,543 | ​ | $ | 120,632 | ​ | $ | 186,483
Weighted-average basic common shares | ​ | ​ | 70,393 | ​ | ​ | 54,756 | ​ | ​ | 34,561
Basic earnings per common share | ​ | $ | 6.76 | ​ | $ | 2.20 | ​ | $ | 5.40
Basic earnings per common share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 475,543 | ​ | $ | 120,632 | ​ | $ | 186,483
Weighted-average basic common shares | ​ | ​ | 70,393 | ​ | ​ | 54,756 | ​ | ​ | 34,561
Effect of dilutive securities | ​ | ​ | 496 | ​ | ​ | 307 | ​ | ​ | 236
Weighted-average dilutive shares | ​ | ​ | 70,889 | ​ | ​ | 55,063 | ​ | ​ | 34,797
Basic earnings per common share | ​ | $ | 6.71 | ​ | $ | 2.19 | ​ | $ | 5.36
​ The calculation of diluted earnings per common share excludes outstanding stock options for which the results would have been antidilutive under the treasury stock method are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
(Dollars in thousands) | ​ | 2021 | ​ | 2020 | ​ | 2019 |
Number of shares |  | ​ | ​ | ​ | ​ | 57,169 |  | ​ | ​ | ​ | ​ | 136,844 |  | ​ | ​ | ​ | ​ | 62,235 |
Range of exercise prices | ​ | $ | 87.30 | to | $ | 91.35 | ​ | $ | 61.42 | to | $ | 91.35 | ​ | $ | 87.30 | to | $ | 91.35 | ​
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