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Earnings Per Share | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share |
Earnings Per Share | Note 11 — Earnings Per Share ​ Basic earnings per share are calculated by dividing net income by the weighted-average shares of common stock outstanding during each period, excluding non-vested shares. Our diluted earnings per share are based on the weighted-average shares of common stock outstanding during each period plus the maximum dilutive effect of common stock issuable upon exercise of stock options or vesting of restricted shares. The weighted-average number of shares and equivalents are determined after giving retroactive effect to stock dividends and stock splits. ​ The following table sets forth the computation of basic and diluted earnings per share: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​
​ | ​ | March 31, | ​
(Dollars and shares in thousands, except for per share amounts) |  | 2020 |  | 2019 |
Basic earnings per common share: | ​ | ​ |  | ​ | ​ |  | ​
Net income | ​ | $ | 24,110 | ​ | $ | 44,367 | ​
Weighted-average basic common shares | ​ | ​ | 33,566 | ​ | ​ | 35,445 | ​
Basic earnings per common share | ​ | $ | 0.72 | ​ | $ | 1.25 | ​
Diluted earnings per share: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 24,110 | ​ | $ | 44,367 | ​
Weighted-average basic common shares | ​ | ​ | 33,566 | ​ | ​ | 35,445 | ​
Effect of dilutive securities | ​ | ​ | 239 | ​ | ​ | 174 | ​
Weighted-average dilutive shares | ​ | ​ | 33,805 | ​ | ​ | 35,619 | ​
Diluted earnings per common share | ​ | $ | 0.71 | ​ | $ | 1.25 | ​
​ The calculation of diluted earnings per common share excludes outstanding stock options for which the results would have been anti-dilutive under the treasury stock method as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​
(Dollars in thousands) |  | 2020 |  | 2019 |
Number of shares | ​ | ​ | ​ | ​ | ​ | 62,235 | ​ | ​ | ​ | ​ | ​ | 87,917 | ​
Range of exercise prices | ​ | $ | 87.30 | to | $ | 91.35 | ​ | $ | 63.54 | to | $ | 91.35 | ​
​

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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