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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share, Basic and Diluted | The following table sets forth the computation of basic and diluted EPS for the years ended December 31, 2020, 2019 and 2018 (in thousands, except per share data):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2020 | ​ | 2019 | ​ | 2018
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 102,859 | ​ | $ | 77,916 | ​ | $ | 55,789
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares of common stock outstanding | ​ | ​ | 11,771 | ​ | ​ | 11,771 | ​ | ​ | 11,947
Effect of dilutive common stock equivalents | ​ | ​ | 79 | ​ | ​ | 346 | ​ | ​ | 132
Weighted average shares of common stock outstanding | ​ | ​ | 11,850 | ​ | ​ | 12,117 | ​ | ​ | 12,079
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share - basic | ​ | $ | 8.74 | ​ | $ | 6.62 | ​ | $ | 4.67
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share - diluted | ​ | $ | 8.68 | ​ | $ | 6.43 | ​ | $ | 4.62

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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=6371337&loc=d3e3550-109257 + Details
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