Industry Segments - Schedule of Reconciliation of Segment Item to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	$ 11,862	$ 11,201	$ 34,777	$ 32,393
Capital expenditures	8,586	10,039	23,534	29,334
Investment in unconsolidated affiliates	27,583		27,583		$ 26,310
Total assets	1,998,513		1,998,513		1,995,241
Operating Segments
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	11,512	10,865	33,725	31,406
Capital expenditures	7,209	9,802	21,237	28,060
Investment in unconsolidated affiliates	27,583		27,583		26,310
Total assets	1,870,111		1,870,111		1,875,998
Corporate
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	350	336	1,052	987
Capital expenditures	1,377	237	2,297	1,274
Investment in unconsolidated affiliates	0		0		0
Total assets	128,402		128,402		119,243
Vehicle Control \| Operating Segments
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	4,648	4,173	13,395	11,913
Capital expenditures	3,341	5,895	10,511	17,397
Investment in unconsolidated affiliates	6,853		6,853		2,883
Total assets	726,303		726,303		741,732
Temperature Control \| Operating Segments
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	891	785	2,586	2,347
Capital expenditures	527	827	2,339	3,098
Investment in unconsolidated affiliates	19,266		19,266		20,402
Total assets	312,985		312,985		312,884
Nissens Automotive \| Operating Segments
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	3,300	3,333	9,877	9,645
Capital expenditures	1,247	52	2,769	737
Investment in unconsolidated affiliates	0		0		0
Total assets	541,123		541,123		531,606
Engineered Solutions \| Operating Segments
Segment Reporting, Profit (Loss) [Abstract]
Depreciation and amortization	2,673	2,574	7,867	7,501
Capital expenditures	2,094	$ 3,028	5,618	$ 6,828
Investment in unconsolidated affiliates	1,464		1,464		3,025
Total assets	$ 289,700		$ 289,700		$ 289,776