Segment Reporting - Summary of Sales by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	$ 723,355	$ 835,469	$ 782,583
Gross profit	73,119	121,091	85,027
Selling, general & administrative expenses	73,877	81,218	60,206
Operating income (loss)	(758)	39,873	24,821
Other (income) expense	(2,200)	1,195	10,463
Interest expense	9,174	10,248	9,159
Loss on early extinguishment of debt	509	0	921
Income (loss) before provision for income taxes	(8,241)	28,430	4,278
Capital expenditures, depreciation and restructuring:
Depreciation expense	13,900	13,100	13,400
Restructuring	10,784	1,800
Vehicle Solutions
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	404,164	469,962	470,334
Electrical Systems
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	189,626	228,424	180,404
Aftermarket & Accessories
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	129,565	137,083	131,845
Operating Segments
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	723,355	835,469	782,583
Cost of revenues	650,078	714,195	697,055
Gross profit	73,277	121,274	85,528
Selling, general & administrative expenses	39,900	43,360	36,223
Operating income (loss)	33,377	77,914	49,305
Operating Segments | Vehicle Solutions
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	404,164	469,962	470,334
Cost of revenues	364,936	410,599	427,260
Gross profit	39,228	59,363	43,074
Selling, general & administrative expenses	21,326	26,109	23,533
Operating income (loss)	17,902	33,254	19,541
Capital expenditures, depreciation and restructuring:
Capital expenditures	6,794	7,769	7,774
Depreciation expense	7,171	7,356	7,490
Restructuring	5,936	809	751
Operating Segments | Electrical Systems
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	189,626	228,424	180,404
Cost of revenues	178,925	193,027	156,411
Gross profit	10,701	35,397	23,993
Selling, general & administrative expenses	10,252	9,107	5,775
Operating income (loss)	449	26,290	18,218
Capital expenditures, depreciation and restructuring:
Capital expenditures	5,968	9,096	3,936
Depreciation expense	4,616	3,972	3,496
Restructuring	3,745	8	674
Operating Segments | Aftermarket & Accessories
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues	129,565	137,083	131,845
Cost of revenues	106,217	110,569	113,384
Gross profit	23,348	26,514	18,461
Selling, general & administrative expenses	8,322	8,144	6,915
Operating income (loss)	15,026	18,370	11,546
Capital expenditures, depreciation and restructuring:
Capital expenditures	1,187	1,762	3,692
Depreciation expense	1,605	1,288	1,309
Restructuring	939	0	1,909
Corporate/ Other
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Corporate and other unallocated costs	34,135	38,041	$ 24,484
Capital expenditures, depreciation and restructuring:
Restructuring	$ 164	$ 983