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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2022
EARNINGS PER SHARE |
Computation of basic and diluted earnings per share | The following table sets forth the computation of basic and diluted earnings per share: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2022 |  | 2021 |  | 2020
Numerator: |  | ​ |  |  | ​ |  |  | ​ |
Net income | ​ | $ | 472,224 | ​ | $ | 276,466 | ​ | $ | 206,115
Denominator (shares in 000's): | ​ |  |  | ​ |  |  | ​ |  |
Basic weighted average shares outstanding | ​ |  | 58,030 | ​ |  | 59,309 | ​ |  | 59,633
Effect of dilutive securities - Stock options and awards | ​ |  | 719 | ​ |  | 753 | ​ |  | 615
Diluted weighted average shares outstanding | ​ |  | 58,749 | ​ |  | 60,062 | ​ |  | 60,248
Basic earnings per share | ​ | $ | 8.14 | ​ | $ | 4.66 | ​ | $ | 3.46
Diluted earnings per share | ​ | $ | 8.04 | ​ | $ | 4.60 | ​ | $ | 3.42
​

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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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