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Earnings Per Share (Details 1) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Net Income (Loss)                      
Income (loss) from continuing operations $ (29,341) $ (2,480) $ (2,653) $ (7,386) $ (72,891) $ (4,285) $ (5,902) $ (6,700) $ (41,860) $ (89,778) $ (181,066)
Income (loss) from discontinued operations, net of tax 0 0 0 0 (45,139) 1,244 1,639 1,097 0 (41,159) 10,138
Net loss $ (29,341) $ (2,480) $ (2,653) $ (7,386) $ (118,030) $ (3,041) $ (4,263) $ (5,603) $ (41,860) $ (130,937) $ (170,928)
Basic EPS                      
Weighted-average common shares outstanding                 6,192 6,149 6,164
Continuing operations (in dollars per share) $ (4.73) $ (0.40) $ (0.43) $ (1.20) $ (11.83) $ (0.70) $ (1.12) $ (1.09) $ (6.76) $ (14.60) $ (29.37)
Discontinued operations (in dollars per share) 0.00 0.00 0.00 0.00 (7.33) 0.20 0.40 0.18 0.00 (6.69) 1.64
Basic earnings (loss) per common share (in dollars per share)                 $ (6.76) $ (21.29) $ (27.73)
Diluted EPS                      
Weighted-average common and common equivalent shares outstanding                 6,192 6,149 6,164
Continuing operations (in dollars per share) (4.73) (0.40) (0.43) (1.20) (11.83) (0.70) (1.12) (1.09) $ (6.76) $ (14.60) $ (29.37)
Discontinued operations (in dollars per share) $ 0.00 $ 0.00 $ 0.00 $ 0.00 $ (7.33) $ 0.20 $ 0.40 $ 0.18 0.00 (6.69) 1.64
Diluted earnings (loss) per common share (in dollars per share)                 $ (6.76) $ (21.29) $ (27.73)
Computation of Shares Used in Earnings Per Share Computations                      
Weighted-average common shares outstanding                 6,192 6,149 6,164
Weighted-average common equivalent shares - dilutive effect of stock options and awards (in shares)                 0 0 0
Weighted-average common and common equivalent shares outstanding                 6,192 6,149 6,164
Stock Options                      
Stock-based compensation                      
Weighted-average anti-dilutive shares have been excluded from the EPS calculations                 300 400 500
Unvested Shares                      
Stock-based compensation                      
Weighted-average anti-dilutive shares have been excluded from the EPS calculations                 100 100 100