Condensed Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Common Stock	Preferred Stock	Treasury Stock	Additional Paid-in Capital	Equity-based Compensation Agreement	Foreign Currency Translation Adjustment	Unrealized Pension Actuarial Losses, net of tax	Accumulated Deficit	Total
Balances (as previously reported)				$ (57,389)	$ 27,342	$ (3,547)	$ (12,339)	$ (293,968)	$ (339,901)
Balances (as previously reported (in shares)	144,400
Conversion of Stock, Reverse Acquisition, Shares	63,880,157
Beginning balance at Dec. 31, 2016				(57,389)	27,342	(3,547)	(12,339)	(293,968)	(339,901)
Beginning balance (in shares) at Dec. 31, 2016	64,024,557
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss								(15,681)	(15,681)
Equity-based compensation					310				310
Foreign currency translation adjustment						2,414			2,414
Contribution from Shareholders				20,538					20,538
Net realized pension actuarial gains, net of tax							(281)		(281)
Ending balance at Mar. 31, 2017				(36,851)	27,652	(1,133)	(12,620)	(309,649)	(332,601)
Ending balance (in shares) at Mar. 31, 2017	64,024,557
Beginning balance at Dec. 31, 2017	$ 15	$ 1	$ (249)	482,018	34,085	(194)	(11,054)	(514,628)	(10,006)
Beginning balance (in shares) at Dec. 31, 2017	150,529,151	6,194,233	49,300
Increase (Decrease) in Stockholders' Equity (Deficit)
Implementation of ASU 2014-09 (Note 2)								(1,419)	(1,419)
Net loss								(23,994)	(23,994)
Equity-based compensation					959				959
Foreign currency translation adjustment						(268)			(268)
Net realized pension actuarial gains, net of tax							(403)		(403)
Preferred shares converted to common	1,986,767
Preferred shares converted to common		(1,625,000)
Ending balance at Mar. 31, 2018	$ 15	$ 1	$ (249)	$ 482,018	$ 35,044	$ (462)	$ (11,457)	$ (540,041)	$ (35,131)
Ending balance (in shares) at Mar. 31, 2018	152,515,918	4,569,233	49,300