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Earnings (Loss) Per Common Share | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Earnings (Loss) Per Common Share | 3. Earnings (Loss) Per Common Share Basic earnings (loss) per common share are calculated by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings per common share adjust basic earnings per common share for the effects of potentially dilutive common shares. Potentially dilutive common shares include the dilutive effects of shares issuable under our equity compensation plans, including stock options and restricted stock, each using the treasury stock method. Due to a net loss applicable to common stockholders for the year ended December 31, 2013, we excluded 1,232,880 potentially dilutive securities from the computation as their effect would be anti-dilutive.
|  | Year Ended December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Numerator—basic and diluted |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | 66,053 |  |  | $ | 58,807 |  |  | $ | (10,594 | )
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding — basic |  |  | 40,846 |  |  |  | 39,726 |  |  |  | 39,188 |
Effect of dilutive stock options |  |  | 388 |  |  |  | 375 |  |  |  | — |
Effect of dilutive restricted shares |  |  | 495 |  |  |  | 628 |  |  |  | — |
Weighted average number of common shares outstanding — diluted |  |  | 41,729 |  |  |  | 40,729 |  |  |  | 39,188 |
Earnings (loss) per common share — basic |  | $ | 1.62 |  |  | $ | 1.48 |  |  | $ | (0.27 | )
Earnings (loss) per common share — diluted |  | $ | 1.58 |  |  | $ | 1.44 |  |  | $ | (0.27 | )
Antidilutive stock options and restricted shares |  |  | 1,734 |  |  |  | 2,967 |  |  |  | 4,363 |

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