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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2022
EARNINGS PER SHARE |
Schedule of computation of basic and diluted earnings (loss) per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2021 |  | 2020 |
​ | ​ | (in thousands, except share and per share data) |
Basic | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 298,209 | ​ | $ | 213,521 | ​ | $ | 71,100 | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average shares | ​ |  | 24,585,205 | ​ |  | 25,471,939 | ​ |  | 25,410,232 | ​
Earnings per common share | ​ | $ | 12.13 | ​ | $ | 8.38 | ​ | $ | 2.80 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 298,209 | ​ | $ | 213,521 | ​ | $ | 71,100 | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average shares | ​ |  | 24,585,205 | ​ |  | 25,471,939 | ​ |  | 25,410,232 | ​
Effect of dilutive securities | ​ |  | 919,303 | ​ |  | 1,300,187 | ​ |  | 1,012,291 | ​
Adjusted weighted-average shares and assumed conversions | ​ |  | 25,504,508 | ​ |  | 26,772,126 | ​ |  | 26,422,523 | ​
Earnings per common share | ​ | $ | 11.69 | ​ | $ | 7.98 | ​ | $ | 2.69 | ​

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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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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