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)			(3,000)		$ (300)	(3,300)	(3,000)
Purchase of treasury stock					$ 0		0
Purchase of treasury stock, shares					13,879
Pension adjustments, net of tax				200		200	200
Restricted stock grants and other		(2,100)			$ 2,000		(100)
Restricted stock grants and other, shares					(113,308)
Net change in cumulative translation adjustment				(200)		(200)
ASC 606 Adjustment			300			300
Balance at Jun. 30, 2018	$ 100	1,048,800	(1,030,200)	(18,900)	$ (24,600)	$ (5,000)	(29,800)
Balance, shares at Jun. 30, 2018	5,687,789				534,510
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)			9,000				9,000
Purchase of treasury stock					$ 0		$ 0
Purchase of treasury stock, shares					90,000		90,000
Pension adjustments, net of tax			100				$ 100
Balance at Jun. 30, 2019	$ 100	$ 1,049,100	$ (1,013,900)	$ (20,600)	$ (24,700)		$ (10,000)
Balance, shares at Jun. 30, 2019	5,687,789				640,302