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Earnings Per Share | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | Note 3 – Earnings Per Share Basic earnings per share is computed using the weighted-average number of shares outstanding. Diluted earnings per share is computed using the weighted-average number of shares outstanding adjusted for the incremental shares attributed to outstanding stock equivalents. Stock equivalents include common shares issuable upon the exercise of stock options and other equity instrume nts, and are computed using the treasury stock method. Under the treasury stock method, the exercise price of a share, and the amount of compensation cost, if any, for future service that the Company has not yet recognized are assumed to be used to repurchase shares in the current period. The following table sets forth the calculation of basic and diluted earn ings per share:
|  |  | Three Months Ended |  | Nine Months Ended
|  |  | September 30, |  | September 30,
(in thousands, except per share data) |  |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016
Net income |  | $ | 17,512 |  | $ | 21,742 |  | $ | 44,375 |  | $ | 45,479
Denominator for basic earnings per share - |  |  |  |  |  |  |  |  |  |  |  |
| weighted-average number of common |  |  |  |  |  |  |  |  |  |  |  |
| shares outstanding during the period |  |  | 49,865 |  |  | 48,965 |  |  | 49,716 |  |  | 49,377
Incremental common shares attributable to |  |  |  |  |  |  |  |  |  |  |  |
| exercise of dilutive options |  |  | 268 |  |  | 323 |  |  | 319 |  |  | 304
Incremental common shares attributable |  |  |  |  |  |  |  |  |  |  |  |
| to outstanding restricted stock units |  |  | 197 |  |  | 126 |  |  | 257 |  |  | 197
Denominator for diluted earnings per share |  |  | 50,330 |  |  | 49,414 |  |  | 50,292 |  |  | 49,878
Basic earnings per share |  | $ | 0.35 |  | $ | 0.44 |  | $ | 0.89 |  | $ | 0.92
Diluted earnings per share |  | $ | 0.35 |  | $ | 0.44 |  | $ | 0.88 |  | $ | 0.91
Options to purchase 0.6 million and 1.0 million common shares for both the three- and nine-month periods ended September 30, 2016, respectively, were not included in the computation of diluted earnings per share because their effect would have been anti-dilutive.

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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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