Consolidated Statements of Stockholders' (Deficit) Equity - USD ($) shares in Thousands, $ 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, 2017		3,734	0
Beginning Balance at Dec. 31, 2017	$ 33,985	$ 37	$ 0	$ 49,944	$ (13,327)	$ (2,669)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(20,309)				(20,309)
Foreign currency translation adjustments, net of tax	(3,013)					(3,013)
Change in unrecognized pension and postretirement benefit costs, $0 tax effect	0
Reclassification to equity of interest paid in kind attributable to conversion option, net of $0 tax effect	$ 3,447			3,447
Share-based compensation (in shares)	69
Share-based compensation	$ 1,362			1,362
Vesting of restricted shares and other	120	$ 1		119
Ending Balance (in shares) at Sep. 30, 2018		3,803	0
Ending Balance at Sep. 30, 2018	15,592	$ 38	$ 0	54,872	(33,636)	(5,682)
Beginning Balance (in shares) at Jun. 30, 2018		3,803	0
Beginning Balance at Jun. 30, 2018	21,601	$ 38	$ 0	53,212	(26,981)	(4,668)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,655)				(6,655)
Foreign currency translation adjustments, net of tax	(1,014)					(1,014)
Change in unrecognized pension and postretirement benefit costs, $0 tax effect	0
Reclassification to equity of interest paid in kind attributable to conversion option, net of $0 tax effect	1,169			1,169
Share-based compensation	454			454
Vesting of restricted shares and other	37			37
Ending Balance (in shares) at Sep. 30, 2018		3,803	0
Ending Balance at Sep. 30, 2018	15,592	$ 38	$ 0	54,872	(33,636)	(5,682)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect from adoption of the new lease standard (Leases: Topic 842) (Note 8)	(50,472)
Beginning Balance (in shares) at Dec. 31, 2018		3,803	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	(28,503)				(28,503)
Foreign currency translation adjustments, net of tax	(1,811)					(1,811)
Change in unrecognized pension and postretirement benefit costs, $0 tax effect	69					69
Reclassification to equity of interest paid in kind attributable to conversion option, net of $0 tax effect	2,735			2,735
Share-based compensation	1,143			1,143
Vesting of restricted shares and other (in shares)		15	168
Vesting of restricted shares and other	101		$ (454)	555
Ending Balance (in shares) at Sep. 30, 2019		3,818	168
Ending Balance at Sep. 30, 2019	(35,381)	$ 38	$ (454)	59,854	(78,729)	(16,090)
Beginning Balance (in shares) at Jun. 30, 2019		3,818	168
Beginning Balance at Jun. 30, 2019	(23,438)	$ 38	$ (454)	58,556	(66,533)	(15,045)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(12,196)				(12,196)
Foreign currency translation adjustments, net of tax	(1,068)					(1,068)
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 $0 tax effect	927			927
Share-based compensation	371			371
Vesting of restricted shares and other	0
Ending Balance (in shares) at Sep. 30, 2019		3,818	168
Ending Balance at Sep. 30, 2019	(35,381)	$ 38	$ (454)	$ 59,854	$ (78,729)	$ (16,090)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect from adoption of the new lease standard (Leases: Topic 842) (Note 8)	$ (78,729)