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Earnings Per Share | 6 Months Ended
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Jun. 30, 2016
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.
| Three months ended |  | Six months ended
| June 30, 2016 |  | June 30, 2015 |  | June 30, 2016 |  | June 30, 2015
| (in thousands, except share and per share data)
Numerator: |  |  |  |  |  |  |
Net income | $ | 14,341 |  |  | $ | 11,130 |  |  | $ | 25,147 |  |  | $ | 19,529 |
Denominator: |  |  |  |  |  |  |  |  |
Basic weighted average shares | 53,036,009 |  |  | 54,208,362 |  |  | 53,028,224 |  |  | 54,205,657 |
Effect of dilutive stock options and restricted stock | 365,229 |  |  | 461,401 |  |  | 367,137 |  |  | 508,947 |
Diluted weighted average shares | 53,401,238 |  |  | 54,669,763 |  |  | 53,395,361 |  |  | 54,714,604 |
Earnings per share: |  |  |  |  |  |  |  |  |
Basic | $ | 0.27 |  |  | $ | 0.21 |  |  | $ | 0.47 |  |  | $ | 0.36 |
Diluted | $ | 0.27 |  |  | $ | 0.20 |  |  | $ | 0.47 |  |  | $ | 0.36 |
Anti-dilutive shares: |  |  |  |  |  |  |  |  |
Shares | 504,955 |  |  | 145,136 |  |  | 493,264 |  |  | 134,625 |

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