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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings per Share | The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share amounts):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Numerator: |  |  |  |  |  |  |  |
Net income |  | $ | 33,325 |  |  | $ | 28,274 |  |  | $ | 105,131 |  |  | $ | 76,158 |
Denominator: |  |  |  |  |  |  |  |
Weighted-average common shares for calculating basic earnings per share |  | 43,981 |  |  | 47,628 |  |  | 45,107 |  |  | 48,090 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options and nonvested common stock awards |  | 135 |  |  | 40 |  |  | 97 |  |  | 27 |
Weighted-average common shares for calculating diluted earnings per share |  | 44,116 |  |  | 47,668 |  |  | 45,204 |  |  | 48,117 |
Earnings per share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.76 |  |  | $ | 0.59 |  |  | $ | 2.33 |  |  | $ | 1.58 |
Diluted |  | $ | 0.76 |  |  | $ | 0.59 |  |  | $ | 2.33 |  |  | $ | 1.58 |

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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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