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Earnings Per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2022
Earnings Per Common Share |
Schedule of computation of earnings per common share | Earnings per common share have been computed as follows (dollars in thousands, except per share amounts): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2022 |  | 2021
Net income | ​ | $ | 28,439 | ​ | $ | 37,816
Shares: | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding | ​ |  | 55,427,696 | ​ |  | 54,471,860
Dilutive effect of outstanding options, warrants, and stock units as determined by the application of the treasury stock method | ​ |  | 755,748 | ​ |  | 563,946
Dilutive effect of ESPP shares | ​ | ​ | 11,502 | ​ | ​ | —
Weighted average common shares outstanding, as adjusted for diluted earnings per share calculation | ​ |  | 56,194,946 | ​ |  | 55,035,806
​ | ​ | ​ | ​ | ​ | ​ | ​
Basic earnings per common share | ​ | $ | 0.51 | ​ | $ | 0.69
​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted earnings per common share | ​ | $ | 0.51 | ​ | $ | 0.69
Schedule of shares excluded from computation of diluted earnings per common share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2022 |  | 2021
Anti-dilutive common stock equivalents | ​ | ​ | ​ | ​ | ​ | ​
RSU and DSU awards | ​ | ​ | — | ​ | ​ | 243,396
PSU awards | ​ | ​ | 241,452 | ​ | ​ | 114,883
Total anti-dilutive common stock equivalents | ​ | ​ | 241,452 | ​ | ​ | 358,279

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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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 http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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