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Industry Segments (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Segment	Jun. 30, 2023 USD ($)
Segment Reporting Information, Profit (Loss) [Abstract]
Number of operating segments | Segment				3
Net sales	[1]	$ 389,829	$ 353,075	$ 721,232	$ 681,103
Operating Income		24,986	27,178	39,605	47,924
Vehicle Control [Member] | Reportable Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	188,741	183,789	374,265	368,366
Operating Income		15,116	19,273	30,656	36,648
Temperature Control [Member] | Reportable Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	124,481	97,074	196,089	169,480
Operating Income		13,197	5,800	15,228	7,884
Engineered Solutions [Member] | Reportable Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	76,607	72,212	150,878	143,257
Operating Income		5,812	6,163	8,044	11,810
Other [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	[1]	0	0	0	0
Operating Income		$ (9,139)	$ (4,058)	$ (14,323)	$ (8,418)
[1] There are no intersegment sales among our Vehicle Control, Temperature Control and Engineered Solutions operating segments.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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