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Income (loss) per Common Share | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Income (loss) per Common Share | 2. Income (loss) per Common Share The following table sets forth the computation of basic and diluted net income (loss) per common share:
|  | 2015 |  |  | 2014 |  |  | 2013 |
|  | (Dollars In Thousands, Except Per Share Amounts) |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income: |  | $ | (34,765 | ) |  | $ | 19,634 |  |  | $ | 54,962 |
Dividend requirements on Series E Redeemable Preferred |  |  | (2,287 | ) |  |  | — |  |  |  | — |
Dividends on Series B Preferred |  |  | (240 | ) |  |  | (240 | ) |  |  | (240 | )
Dividends on Series D Preferred |  |  | (60 | ) |  |  | (60 | ) |  |  | (60 | )
Accretion of Series E Redeemable Preferred |  |  | (686 | ) |  |  | — |  |  |  | — |
Total dividends, dividend requirements and accretion on preferred stocks |  |  | (3,273 | ) |  |  | (300 | ) |  |  | (300 | )
Numerator for basic net income (loss) per common share - net income (loss) attributable to common stockholders |  |  | (38,038 | ) |  |  | 19,334 |  |  |  | 54,662 |
Dividends on convertible preferred stocks assumed to be converted, if dilutive |  |  | 300 |  |  |  | 300 |  |  |  | 300 |
Numerator for diluted net income (loss) per common share |  | $ | (37,738 | ) |  | $ | 19,634 |  |  | $ | 54,962 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic net income (loss) per common share - weighted- average shares |  |  | 22,758,873 |  |  |  | 22,575,053 |  |  |  | 22,465,176 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stocks |  |  | — |  |  |  | 916,666 |  |  |  | 916,666 |
Unvested restricted stock |  |  | — |  |  |  | — |  |  |  | — |
Warrants |  |  | — |  |  |  | — |  |  |  | — |
Stock options |  |  | — |  |  |  | 175,751 |  |  |  | 215,124 |
Dilutive potential common shares |  |  | — |  |  |  | 1,092,417 |  |  |  | 1,131,790 |
Denominator for dilutive net income (loss) per common share - adjusted weighted-average shares and assumed conversions |  |  | 22,758,873 |  |  |  | 23,667,470 |  |  |  | 23,596,966 |
Basic net income (loss) per common share |  | $ | (1.67 | ) |  | $ | 0.86 |  |  | $ | 2.43 |
Diluted net income (loss) per common share |  | $ | (1.67 | ) |  | $ | 0.83 |  |  | $ | 2.33 |
The following weighted-average shares of securities were not included in the computation of diluted net income (loss) per common share as their effect would have been antidilutive:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Convertible preferred stocks |  |  | 916,666 |  |  |  | — |  |  |  | — |
Stock options |  |  | 898,582 |  |  |  | 392,314 |  |  |  | 246,391 |
Warrants |  |  | 314,808 |  |  |  | — |  |  |  | — |
Series E redeemable preferred stock - embedded derivative |  |  | 34,998 |  |  |  | — |  |  |  | — |
Restricted stock |  |  | 1,448 |  |  |  | — |  |  |  | — |
|  |  | 2,166,502 |  |  |  | 392,314 |  |  |  | 246,391 |

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