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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Share, Basic and Diluted | ​ The following table sets forth the computation of basic and diluted EPS (in thousands, except per share data):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended June 30, | ​ | Six months ended June 30, | ​
​ | ​ | 2019 | ​ | 2018 | ​ | 2019 | ​ | 2018 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 21,383 | ​ | $ | 14,133 | ​ | $ | 42,133 | ​ | $ | 26,355 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares of common stock outstanding | ​ | ​ | 11,861 | ​ | ​ | 12,037 | ​ | ​ | 11,870 | ​ | ​ | 12,032 | ​
Effect of dilutive common stock equivalents | ​ | ​ | 357 | ​ | ​ | 137 | ​ | ​ | 359 | ​ | ​ | 97 | ​
Weighted average shares of common stock outstanding | ​ | ​ | 12,218 | ​ | ​ | 12,174 | ​ | ​ | 12,229 | ​ | ​ | 12,129 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share - basic | ​ | $ | 1.80 | ​ | $ | 1.17 | ​ | $ | 3.55 | ​ | $ | 2.19 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share - diluted | ​ | $ | 1.75 | ​ | $ | 1.16 | ​ | $ | 3.45 | ​ | $ | 2.17 | ​

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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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