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Net Income Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2019
Net Income Per Common Share |
Schedule of net income per common share | The calculation of the weighted average number of shares of common stock outstanding for Basic EPS and Diluted EPS for the periods indicated (in thousands, except per share data) is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended | ​
​ | ​ | September 30, | ​ | September 30, | ​ | ​
​ |  | 2019 |  | 2018 | ​ | 2019 |  | 2018 |  |
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net Income | ​ | $ | 91,339 | ​ | $ | 83,046 | ​ | $ | 267,572 | ​ | $ | 213,266 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average number of common shares outstanding | ​ |  | 50,746 | ​ |  | 52,039 | ​ |  | 51,111 | ​ |  | 52,002 | ​ | ​
Effect of outstanding share-based awards | ​ |  | 383 | ​ |  | 942 | ​ |  | 457 | ​ |  | 974 | ​ | ​
Weighted average number of shares for diluted net income per common share | ​ |  | 51,129 | ​ |  | 52,981 | ​ |  | 51,568 | ​ |  | 52,976 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic earnings per share | ​ | $ | 1.80 | ​ | $ | 1.60 | ​ | $ | 5.24 | ​ | $ | 4.10 | ​ | ​
Diluted earnings per share | ​ | $ | 1.79 | ​ | $ | 1.57 | ​ | $ | 5.19 | ​ | $ | 4.03 | ​ | ​

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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