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Earnings Per Share | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Basic net income per share is calculated by dividing net income by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share assumes the conversion of all potentially dilutive securities and is calculated by dividing net income by the sum of the weighted average number of shares of common stock outstanding plus all potentially dilutive securities. Dilutive common shares consist primarily of stock options and restricted stock awards. The following table sets forth the computation of basic and diluted earnings per share:
| 2017 |  | 2016 |  | 2015
Numerator: | (in thousands, except share and per share data)
Net income | $ | 54,498 |  |  | $ | 53,376 |  |  | $ | 45,728 |
Denominator: |  |  |  |  |  |  |  |
Basic weighted average shares | 52,572,496 |  |  | 52,924,398 |  |  | 54,045,841 |
Effect of dilutive stock options and restricted stock | 506,238 |  |  | 525,356 |  |  | 435,643 |
Diluted weighted average shares | 53,078,734 |  |  | 53,449,754 |  |  | 54,481,484 |
Earnings per share: |  |  |  |  |  |  |  |
Basic | $ | 1.04 |  |  | $ | 1.01 |  |  | $ | 0.85 |
Dilutive | $ | 1.03 |  |  | $ | 1.00 |  |  | $ | 0.84 |
Anti-dilutive shares: |  |  |  |  |  |  |  |
Shares | 785,825 |  |  | 469,603 |  |  | 146,548 |

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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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