Consolidated Statements of Shareholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Unrecognized Gains (Losses) on Derivative Instruments	Pension Obligations	Cumulative Translation Adjustment	Retained Earnings
Beginning of period at Dec. 31, 2020	$ (21,522)	$ 95,247	$ (1,738)	$ (7,447)	$ (90,261)	$ (17,323)
Beginning of the period (in shares) at Dec. 31, 2020		25,591,930
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,754					3,754
Change in unrecognized gains/(losses) on derivative instruments, net of tax	(7,313)		(7,313)
Change in defined benefit plans, net of taxes	1,314			1,314
Net foreign currency translation adjustment	(20,529)				(20,529)
Common stock issued, net of shares withheld for employee taxes (in shares)		571,147
Stock-based compensation	7,967	$ 7,967
Redeemable preferred 9% dividend and accretion	(34,050)					(34,050)
European non-controlling redeemable equity dividend	(42)					(42)
End of period at Dec. 31, 2021	$ (70,421)	$ 103,214	(9,051)	(6,133)	(110,790)	(47,661)
End of the period (in shares) at Dec. 31, 2021	26,163,077	26,163,077
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 37,034					37,034
Change in unrecognized gains/(losses) on derivative instruments, net of tax	28,895		28,895
Change in defined benefit plans, net of taxes	7,724			7,724
Net foreign currency translation adjustment	86				86
Common stock issued, net of shares withheld for employee taxes (in shares)		853,048
Stock-based compensation	7,891	$ 7,891
Redeemable preferred 9% dividend and accretion	(36,453)					(36,453)
European non-controlling redeemable equity dividend	(53)					(53)
End of period at Dec. 31, 2022	$ (25,297)	$ 111,105	$ 19,844	$ 1,591	$ (110,704)	$ (47,133)
End of the period (in shares) at Dec. 31, 2022	27,016,125	27,016,125