Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 125,362	$ 123,157	$ 253,429	$ 249,961
Cost of sales (exclusive of depreciation and amortization shown separately below)	103,889	99,797	208,467	199,485
Selling, general, and administrative expense	14,794	13,585	28,248	28,160
Depreciation and amortization	11,340	11,687	22,769	23,255
Other operating expense (income), net	(147)	(324)	1,879	(329)
Loss from operations	(4,514)	(1,588)	(7,934)	(610)
Interest expense	3,488	3,573	6,927	5,597
Loss on extinguishment of debt and write-off of debt issuance costs	0	0	0	2,390
Derivative payments on interest rate swap	0	0	0	1,717
Loss on interest rate swap	0	0
Other expense (income), net	(67)	1,680	(3,063)	1,558
Loss before benefit (provision) for income taxes and share of net income from joint venture	(7,935)	(6,841)	(11,798)	(13,905)
Benefit (provision) for income taxes	(1,051)	231	(2,582)	987
Share of net income from joint venture	419	1,219	2,511	2,614
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	(8,567)	(5,391)	(11,869)	(10,304)
Net loss	(8,567)	(5,391)	(11,869)	(10,304)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(8,490)	4,409	(5,890)	1,062
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	373	0	1,560	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	31	0	65	2,851
Other Comprehensive Income (Loss), Net of Tax, Total	(8,086)	4,409	(4,265)	3,913
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	$ (16,653)	$ (982)	$ (16,134)	$ (6,391)
Earnings Per Share, Basic [Abstract]
Net loss per common share (in dollars per shares)	$ (0.25)	$ (0.17)	$ (0.38)	$ (0.62)
Weighted average common shares outstanding, basic (in shares)	44,708	44,440	44,649	43,561
Earnings Per Share, Diluted [Abstract]
Net loss per common share (in dollars per share)	$ (0.25)	$ (0.17)	$ (0.38)	$ (0.62)
Weighted average common shares outstanding, diluted (in shares)	44,708	44,440	44,649	43,561