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Earnings Per Share | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Earnings Per Share | Note 4 – 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, the amount of compensation cost, if any, for future service that the Company has not yet recognized, and the amount of estimated excess t ax benefits that would be recorded in paid-in-capital, if any, when the option is exercised or the instrument vests are assumed to be used to repurchase shares in the current period. The following table sets forth the calculation of basic and diluted earnings per share:
|  |  | Three Months Ended |  | Six Months Ended
|  |  | June 30, |  | June 30,
(in thousands, except per share data) |  |  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015
Net income |  | $ | 12,685 |  | $ | 21,210 |  | $ | 23,737 |  | $ | 35,415
Denominator for basic earnings per share - |  |  |  |  |  |  |  |  |  |  |  |
| weighted-average number of common |  |  |  |  |  |  |  |  |  |  |  |
| shares outstanding during the period |  |  | 49,323 |  |  | 52,180 |  |  | 49,586 |  |  | 52,321
Incremental common shares attributable to |  |  |  |  |  |  |  |  |  |  |  |
| exercise of dilutive options |  |  | 287 |  |  | 386 |  |  | 289 |  |  | 387
Incremental common shares attributable |  |  |  |  |  |  |  |  |  |  |  |
| to outstanding restricted stock units |  |  | 57 |  |  | 105 |  |  | 167 |  |  | 176
Denominator for diluted earnings per share |  |  | 49,667 |  |  | 52,671 |  |  | 50,042 |  |  | 52,884
Basic earnings per share |  | $ | 0.26 |  | $ | 0.41 |  | $ | 0.48 |  | $ | 0.68
Diluted earnings per share |  | $ | 0.26 |  | $ | 0.40 |  | $ | 0.47 |  | $ | 0.67
Options to purc hase 1.0 million common shares for both the three- and six-month periods ended June 30, 2016 were not included in the computation of diluted earnings per share because their effect would have been anti-dilutive. Options to purchase 1.0 million common shares for both the three- and six-month periods ended June 30, 2015, respectively, were not included in the computation of diluted earnings per share because their effect would also 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 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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