Condensed 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	13,122					13,122
Change in unrecognized gains (losses) on derivative instruments, net of tax	(8,462)		(8,462)
Change in defined benefit plans, net of taxes	76			76
Net foreign currency translation adjustment	(15,678)				(15,678)
Common stock issued, net of shares withheld for employee taxes (in shares)		355,532
Stock-based compensation	505	$ 505
Redeemable preferred 9% dividend and accretion	(8,290)					(8,290)
European non-controlling redeemable equity dividend	(13)					(13)
End of period at Mar. 31, 2021	(40,262)	$ 95,752	(10,200)	(7,371)	(105,939)	(12,504)
End of the period (in shares) at Mar. 31, 2021		25,947,462
Beginning of period at Dec. 31, 2021	$ (70,421)	$ 103,214	(9,051)	(6,133)	(110,790)	(47,661)
Beginning of the period (in shares) at Dec. 31, 2021	26,163,077	26,163,077
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 10,070					10,070
Change in unrecognized gains (losses) on derivative instruments, net of tax	16,821		16,821
Change in defined benefit plans, net of taxes	83			83
Net foreign currency translation adjustment	2,043				2,043
Common stock issued, net of shares withheld for employee taxes (in shares)		690,215
Stock-based compensation	1,002	$ 1,002
Redeemable preferred 9% dividend and accretion	(8,910)					(8,910)
European non-controlling redeemable equity dividend	(11)					(11)
End of period at Mar. 31, 2022	$ (49,323)	$ 104,216	$ 7,770	$ (6,050)	$ (108,747)	$ (46,512)
End of the period (in shares) at Mar. 31, 2022	26,853,292	26,853,292