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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Calculation of Basic and Diluted Earnings Per Share |
The following table sets forth the calculation of basic and diluted earnings per share.
|  |  | Three Months Ended |  | Nine Months Ended
|  |  | September 30, |  | September 30,
(in thousands, except per share data) |  |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012
Net income |  | $ | 23,726 |  | $ | 19,314 |  | $ | 43,670 |  | $ | 38,492
Denominator for basic earnings per share - |  |  |  |  |  |  |  |  |  |  |  |
| weighted-average number of common |  |  |  |  |  |  |  |  |  |  |  |
| shares outstanding during the period |  |  | 54,087 |  |  | 55,814 |  |  | 54,361 |  |  | 56,750
Incremental common shares attributable to |  |  |  |  |  |  |  |  |  |  |  |
| outstanding dilutive options |  |  | 360 |  |  | 131 |  |  | 284 |  |  | 155
Incremental common shares attributable |  |  |  |  |  |  |  |  |  |  |  |
| to outstanding restricted shares, |  |  |  |  |  |  |  |  |  |  |  |
| restricted stock units and phantom stock |  |  | 164 |  |  | 83 |  |  | 223 |  |  | 149
Denominator for diluted earnings per share |  |  | 54,611 |  |  | 56,028 |  |  | 54,868 |  |  | 57,054
Basic earnings per share |  | $ | 0.44 |  | $ | 0.35 |  | $ | 0.80 |  | $ | 0.68
Diluted earnings per share |  | $ | 0.43 |  | $ | 0.34 |  | $ | 0.80 |  | $ | 0.67

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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://www.xbrl.org/2003/role/presentationRef -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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