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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2023
EARNINGS PER SHARE |
Schedule of 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,
​ |  | 2023 |  | 2022 |  | 2021
Numerator: |  | ​ |  |  | ​ |  |  | ​ |
Net income | ​ | $ | 545,248 | ​ | $ | 472,224 | ​ | $ | 276,580
Denominator (shares in 000's): | ​ |  |  | ​ |  |  | ​ |  |
Basic weighted average shares outstanding | ​ |  | 57,364 | ​ |  | 58,030 | ​ |  | 59,309
Effect of dilutive securities - Stock options and awards | ​ |  | 857 | ​ |  | 719 | ​ |  | 753
Diluted weighted average shares outstanding | ​ |  | 58,221 | ​ |  | 58,749 | ​ |  | 60,062
Basic earnings per share | ​ | $ | 9.50 | ​ | $ | 8.14 | ​ | $ | 4.66
Diluted earnings per share | ​ | $ | 9.37 | ​ | $ | 8.04 | ​ | $ | 4.60

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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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