Condensed Consolidated Statements of Shareholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2017	$ 100	$ 1,050,900	$ (1,027,500)	$ (18,900)	$ (26,600)	$ (4,700)	$ (26,700)
Balance, shares at Dec. 31, 2017	5,687,789				633,939
Net income (loss)			(1,700)				(1,700)
Pension adjustments, net of tax				100			100
Restricted stock grants and other		1,700			$ 1,600		(100)
Restricted stock grants and other, shares					(77,690)
Net change in cumulative translation adjustment				(300)			(300)
ASC 606 Adjustment			300		$ 556,249		300
Balance at Mar. 31, 2018	$ 100	1,049,200	(1,028,900)	(19,100)	(25,000)	$ (4,700)	(28,400)
Balance, shares at Mar. 31, 2018	5,687,789
Balance at Dec. 31, 2018	$ 100	1,049,000	(1,022,900)	(20,700)	$ (24,700)		(19,200)
Balance, shares at Dec. 31, 2018	5,687,789				550,302
Net income (loss)			9,600				9,600
Pension adjustments, net of tax				100			100
Balance at Mar. 31, 2019	$ 100	$ 1,049,000	$ (1,013,300)	$ (20,600)	$ (24,700)		$ (9,500)
Balance, shares at Mar. 31, 2019	5,687,789				550,302