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Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Earnings (Loss) Per Share, Diluted, by Common Class, Including Two Class Method |  |  |  |
Basic earnings (loss) | $ 11,715 | $ (8,485) | $ (63,253) | $ 65,822
Weighted Average Shares, Basic | 35,308,000 | 34,290,000 | 34,971,000 | 31,750,000
Basic earnings (loss) (in dollars per share) | $ 0.33 | $ (0.25) | $ (1.81) | $ 2.07
Effect of dilutive securities |  |  |  |
Restricted stock awards | $ 0 | $ 0 | $ 0 | $ 0
Restricted stock awards (in shares) | 22,000 | 0 | 0 | 234,000
Performance share units | $ 0 | $ 0 | $ 0 | $ 0
Performance share units (in shares) | 0 | 0 | 0 | 0
Warrants | $ 0 | $ 0 | $ 0 | $ 0
Warrants (shares) | 0 | 0 | 0 | 0
Diluted earnings (loss) | $ 11,715 | $ (8,485) | $ (63,253) | $ 65,822
Weighted average shares, diluted | 35,330,000 | 34,290,000 | 34,971,000 | 31,984,000
Diluted earnings (loss) per share (in dollars per share) | $ 0.33 | $ (0.25) | $ (1.81) | $ 2.06
Performance Share Units |  |  |  |
Potentially Dilutive Securities |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) | 0 |  | 0 | 0
Warrants |  |  |  |
Potentially Dilutive Securities |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) | 0 | 0 | 0 | 0
Restricted Stock awards |  |  |  |
Potentially Dilutive Securities |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  | 100,000 | 0 |

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