Consolidated Statements of Stockholders' (Deficit) Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	(Accumulated Deficit) Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance (in shares) at Dec. 31, 2018		3,803,000	0
Beginning Balance at Dec. 31, 2018	$ (9,361)	$ 38	$ 0	$ 55,421	$ (50,472)	$ (14,348)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(8,003)				(8,003)
Foreign currency translation adjustments, net of tax	(464)					(464)
Change in unrecognized pension and postretirement benefit costs, $0 tax effect	23					23
Reclassification to equity of interest paid in kind attributable to conversion option, net of $315 tax effect	896			896
Share-based compensation	401			401
Vesting of restricted shares and other (in shares)			168,000
75000	75		$ (454)	529
Ending Balance (in shares) at Mar. 31, 2019		3,803,000	168,000
Ending Balance at Mar. 31, 2019	(16,187)	$ 38	$ (454)	57,247	(58,229)	(14,789)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect from adoption of the new lease standard (Leases: Topic 842)	(88,741)
Beginning Balance (in shares) at Dec. 31, 2019		3,818,000	168,000
Beginning Balance at Dec. 31, 2019	(41,070)	$ 38	$ (454)	61,461	(88,741)	(13,374)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(11,041)				(11,041)
Foreign currency translation adjustments, net of tax	(948)					(948)
Change in unrecognized pension and postretirement benefit costs, $0 tax effect	25					25
Common shares issued upon conversion of debt (Note 6) (in shares)		70,261,000
Common shares issued upon conversion of debt (Note 6)	(25,948)	$ (703)		(25,245)
Share-based compensation	214			214
75000	(250)			(250)
Ending Balance (in shares) at Mar. 31, 2020		74,079,000	168,000
Ending Balance at Mar. 31, 2020	(27,122)	$ 741	$ (454)	$ 86,670	$ (99,782)	$ (14,297)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect from adoption of the new lease standard (Leases: Topic 842)	$ (99,782)