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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2020
EARNINGS PER SHARE. |
Schedule of computation of EPS | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
(In thousands, except per share data) |  | 2020 |  | 2019 |  | 2018
Net income | ​ | $ | 42,042 | ​ | $ | 51,691 | ​ | $ | 39,227
Dividends paid on and earnings allocated to participating securities | ​ |  | (872) |  |  | (1,096) |  |  | (853)
Income attributable to common stock | ​ | $ | 41,170 | ​ | $ | 50,595 | ​ | $ | 38,374
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding, including participating securities | ​ |  | 19,903 |  |  | 19,952 |  |  | 19,875
Weighted average participating securities | ​ |  | (409) |  |  | (424) |  |  | (434)
Weighted average common shares outstanding | ​ |  | 19,494 |  |  | 19,528 | ​ |  | 19,441
Basic earnings per common share | ​ | $ | 2.11 | ​ | $ | 2.59 | ​ | $ | 1.97
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Income attributable to common stock | ​ | $ | 41,170 | ​ | $ | 50,595 | ​ | $ | 38,374
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding | ​ |  | 19,494 |  |  | 19,528 | ​ |  | 19,441
Incremental shares from assumed conversions of options and restricted stock units | ​ |  | 55 |  |  | 31 |  |  | 27
Weighted average common and equivalent shares outstanding | ​ |  | 19,549 |  |  | 19,559 | ​ |  | 19,468
Diluted earnings per common share | ​ | $ | 2.11 | ​ | $ | 2.59 | ​ | $ | 1.97

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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=6371337&loc=d3e3550-109257 + Details
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