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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Earnings Per Share [Abstract]        
Net (loss) income $ (23,651) $ (63) $ (53,634) $ 243
Basic weighted-average common shares outstanding (in shares) 28,051,066 27,899,505 28,048,808 27,808,231
Add: dilutive effect of stock options (in shares) 0 0 0 392,157
Add: dilutive effect of unvested restricted stock (in shares) 0 0 0 0
Diluted weighted-average common shares outstanding (in shares) 28,051,066 27,899,505 28,048,808 28,200,388
Basic net (loss) income per share (in dollars per share) $ (0.84) $ 0 $ (1.91) $ 0.01
Diluted net (loss) income per share (in dollars per share) $ (0.84) $ 0 $ (1.91) $ 0.01
Antidilutive securities excluded from computation of earnings per share [Line Items]        
Weighted-average anti-dilutive securities (in shares) 2,950,979 1,067,341 2,855,371 1,059,176
Stock Option [Member]        
Antidilutive securities excluded from computation of earnings per share [Line Items]        
Weighted-average anti-dilutive securities (in shares) 2,616,790 1,067,341 2,615,542 1,059,176
Restricted Stock [Member]        
Antidilutive securities excluded from computation of earnings per share [Line Items]        
Weighted-average anti-dilutive securities (in shares) 334,189 0 239,829 0