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EARNINGS PER SHARE (Tables) | 3 Months Ended
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Mar. 31, 2022
Earnings Per Share |
Computation of basic and diluted earnings per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended
​ | ​ | March 31,
​ |  | 2022 |  | 2021
Numerator (basic and diluted): |  | ​ |  |  | ​ |
Net income | ​ | $ | 481,880 | ​ | $ | 501,609
​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ |  |  | ​ |  |
Weighted-average common shares outstanding – basic | ​ |  | 66,572 | ​ |  | 70,383
Effect of stock options (1) | ​ |  | 618 | ​ |  | 632
Weighted-average common shares outstanding – assuming dilution | ​ |  | 67,190 | ​ |  | 71,015
​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share: | ​ |  |  | ​ |  |
Earnings per share-basic | ​ | $ | 7.24 | ​ | $ | 7.13
Earnings per share-assuming dilution | ​ | $ | 7.17 | ​ | $ | 7.06
​ | ​ | ​ | ​ | ​ | ​ | ​
Antidilutive potential common shares not included in the calculation of diluted earnings per share: | ​ |  |  | ​ |  |
Stock options (1) | ​ |  | 115 | ​ |  | 211
Weighted-average exercise price per share of antidilutive stock options (1) | ​ | $ | 657.14 | ​ | $ | 437.90
(1) | See Note 10 for further information concerning the terms of the Company’s share-based compensation plans.
​

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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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