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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Components of basic and diluted earnings per common share | Basic and diluted earnings (loss) per common share are as follows (in thousands, except per share data):
| Year ended December 31,
| 2015 |  | 2014 |  | 2013
Net income (loss) attributable to common stockholders | $ | (13,462 | ) |  | $ | 53,603 |  |  | $ | 36,178 |
Weighted average common shares outstanding - Basic | 54,459 |  |  | 54,511 |  |  | 51,346 |
Assumed conversions: |  |  |  |  |
Incremental common shares from warrants | — |  |  | 121 |  |  | 1,355 |
Incremental common shares from stock options | — |  |  | 880 |  |  | 1,133 |
Incremental common shares from restricted stock units | — |  |  | 14 |  |  | 7 |
Weighted average common shares outstanding - Diluted | 54,459 |  |  | 55,526 |  |  | 53,841 |
Basic earnings (loss) per common share | $ | (0.25 | ) |  | $ | 0.98 |  |  | $ | 0.70 |
Diluted earnings (loss) per common share | $ | (0.25 | ) |  | $ | 0.97 |  |  | $ | 0.67 |

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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://www.xbrl.org/2003/role/presentationRef -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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