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Earnings (Loss) Per Share (Basic and Diluted Earnings (Loss) Per Common Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Class of Stock [Line Items]                      
Income from continuing operations $ 3,917 $ (1,870) $ (111) $ (29) $ 1,314 $ 3,589 $ 2,770 $ (515) $ 1,907 $ 7,158 $ 39,622
(Loss) income from discontinued operations, net of tax (17,836) (876) (2,169) (30,156) (2,689) (1,614) (15,317) (1,000) (51,037) (20,620) 13,981
Net (loss) income $ (13,919) $ (2,746) $ (2,280) $ (30,185) $ (1,375) $ 1,975 $ (12,547) $ (1,515) $ (49,130) $ (13,462) $ 53,603
Weighted average common shares outstanding - Basic (in shares)                 56,087 54,459 54,511
Assumed conversions:                      
Weighted average common shares outstanding - Diluted (in shares)                 56,350 54,992 55,526
Basic earnings (loss) per common share:                      
Continuing operations (in dollars per share) $ 0.07 $ (0.03) $ 0.00 $ 0.00 $ 0.02 $ 0.07 $ 0.05 $ (0.01) $ 0.03 $ 0.13 $ 0.73
Discontinued operations, net of tax (in dollars per share) (0.31) (0.02) (0.04) (0.55) (0.05) (0.03) (0.28) (0.02) (0.91) (0.38) 0.26
Basic earnings (loss) per common share (in dollars per share) (0.24) (0.05) (0.04) (0.55) (0.03) 0.04 (0.23) (0.03) (0.88) (0.25) 0.99
Diluted earnings (loss) per common share:                      
Continuing operations (in dollars per share) 0.07 (0.03) 0.00 0.00 0.02 0.07 0.05 (0.01) 0.03 0.13 0.71
Discontinued operations (in dollars per share) (0.31) (0.02) (0.04) (0.55) (0.05) (0.03) (0.28) (0.02) (0.91) (0.37) 0.25
Diluted earnings (loss) per common share (in dollars per share) $ (0.24) $ (0.05) $ (0.04) $ (0.55) $ (0.03) $ 0.04 $ (0.23) $ (0.03) $ (0.88) $ (0.24) $ 0.96
Warrant                      
Assumed conversions:                      
Incremental common shares (in shares)                 0 0 121
Stock options                      
Assumed conversions:                      
Incremental common shares (in shares)                 197 527 880
Restricted Stock Units (RSUs)                      
Assumed conversions:                      
Incremental common shares (in shares)                 66 6 14