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EARNINGS PER SHARE (Tables) | 6 Months Ended
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Jun. 30, 2023
EARNINGS PER SHARE |
Schedule of reconciliation of basic to diluted earnings per share | The following is a reconciliation of basic to diluted earnings per share for the three and six months ended June 30, 2023 and 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
(000’s omitted, except per share data) |  | 2023 |  | 2022 |  | 2023 |  | 2022
Net income | ​ | $ | 48,291 | ​ | $ | 39,805 | ​ | $ | 54,089 | ​ | $ | 86,860
Income attributable to unvested stock-based compensation awards | ​ |  | (192) | ​ |  | (125) | ​ |  | (186) | ​ |  | (252)
Income available to common shareholders | ​ | $ | 48,099 | ​ | $ | 39,680 | ​ | $ | 53,903 | ​ | $ | 86,608
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average common shares outstanding – basic | ​ |  | 53,679 | ​ |  | 53,928 | ​ |  | 53,760 | ​ |  | 53,958
Basic earnings per share | ​ | $ | 0.90 | ​ | $ | 0.74 | ​ | $ | 1.00 | ​ | $ | 1.61
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 48,291 | ​ | $ | 39,805 | ​ | $ | 54,089 | ​ | $ | 86,860
Income attributable to unvested stock-based compensation awards | ​ |  | (192) | ​ |  | (125) | ​ |  | (186) | ​ |  | (252)
Income available to common shareholders | ​ | $ | 48,099 | ​ | $ | 39,680 | ​ | $ | 53,903 | ​ | $ | 86,608
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average common shares outstanding – basic | ​ |  | 53,679 | ​ |  | 53,928 | ​ |  | 53,760 | ​ |  | 53,958
Assumed exercise of stock options | ​ |  | 115 | ​ |  | 293 | ​ |  | 152 | ​ |  | 341
Weighted-average common shares outstanding – diluted | ​ |  | 53,794 | ​ |  | 54,221 | ​ |  | 53,912 | ​ |  | 54,299
Diluted earnings per share | ​ | $ | 0.89 | ​ | $ | 0.73 | ​ | $ | 1.00 | ​ | $ | 1.60

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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