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Earnings Per Share | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | 11. EARNINGS PER SHARE A summary of the calculation of basic and diluted earnings per share for the three and nine months ended September 30, 2017 and 2016 is as follows:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
(In thousands, except per share amounts) |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 15,898 |  |  | $ | 12,415 |  |  | $ | 34,950 |  |  | $ | 27,657 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares – basic |  |  | 47,870 |  |  |  | 48,470 |  |  |  | 48,110 |  |  |  | 48,839 |
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | 487 |  |  |  | 137 |  |  |  | 385 |  |  |  | 137 |
PSUs, RSUs and restricted stock |  |  | 174 |  |  |  | 71 |  |  |  | 123 |  |  |  | 60 |
Weighted average number of shares – diluted |  |  | 48,531 |  |  |  | 48,678 |  |  |  | 48,618 |  |  |  | 49,036 |
Net income per share – basic |  | $ | 0.33 |  |  | $ | 0.26 |  |  | $ | 0.73 |  |  | $ | 0.57 |
Net income per share – diluted |  | $ | 0.33 |  |  | $ | 0.26 |  |  | $ | 0.72 |  |  | $ | 0.56 |
Anti-dilutive options to purchase common stock outstanding were excluded from the above calculations. Anti-dilutive options totaled 3.2 million and 5.6 million for the three months ended September 30, 2017 and 2016, respectively, and 3.9 million and 5.7 million for the nine months ended September 30, 2017 and 2016, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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