Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
		May 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill by operating segment [Abstract]
Goodwill gross, beginning balance			$ 105,719	$ 93,369
Goodwill accumulated impairment losses, Beginning balance			(38,488)	(38,488)
Goodwill net, beginning balance			67,231	54,881
Goodwill foreign currency exchange rate change			182	(396)
Goodwill gross, ending balance			105,901	105,719	$ 93,369
Goodwill accumulated impairment losses, Ending balance			(38,488)	(38,488)	(38,488)
Goodwill net, ending balance			67,413	67,231	54,881
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			98,966	98,742
Less accumulated amortization	[1]		(43,853)	(35,830)
Net acquired intangible assets			55,113	62,912
Amortization of acquired intangible assets [Abstract]
Amortization expense			8,000	7,100	4,900
Estimated amortization expense in year 2018			7,600
Estimated amortization expense in year 2019			6,300
Estimated amortization expense in year 2020			5,900
Estimated amortization expense in year 2020			4,600
Estimated amortization expense in years 2022 through 2031			25,500
General Cable Corporation [Member]
Goodwill by operating segment [Abstract]
Goodwill acquired during period				12,746
Goodwill net, ending balance		$ 12,746
Engine Management [Member]
Goodwill by operating segment [Abstract]
Goodwill gross, beginning balance			91,449	79,099
Goodwill accumulated impairment losses, Beginning balance			(38,488)	(38,488)
Goodwill net, beginning balance			52,961	40,611
Goodwill foreign currency exchange rate change			182	(396)
Goodwill gross, ending balance			91,631	91,449	79,099
Goodwill accumulated impairment losses, Ending balance			(38,488)	(38,488)	(38,488)
Goodwill net, ending balance			53,143	52,961	40,611
Engine Management [Member] | General Cable Corporation [Member]
Goodwill by operating segment [Abstract]
Goodwill acquired during period				12,746
Temperature Control [Member]
Goodwill by operating segment [Abstract]
Goodwill gross, beginning balance			14,270	14,270
Goodwill accumulated impairment losses, Beginning balance			0	0
Goodwill net, beginning balance			14,270	14,270
Goodwill foreign currency exchange rate change			0	0
Goodwill gross, ending balance			14,270	14,270	14,270
Goodwill accumulated impairment losses, Ending balance			0	0	0
Goodwill net, ending balance			14,270	14,270	14,270
Temperature Control [Member] | General Cable Corporation [Member]
Goodwill by operating segment [Abstract]
Goodwill acquired during period				0
Customer Relationships [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			87,290	87,070
Customer Relationships [Member] | General Cable Corporation [Member]
Other Intangible Assets [Abstract]
Estimated useful life of intangible assets		15 years
Trademarks and Trade Names [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			6,800	6,800
Intangible assets acquired [Abstract]
Amount of acquired indefinite-lived intangible assets			5,200
Non-Compete Agreements [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			3,193	3,189
Non-Compete Agreements [Member] | General Cable Corporation [Member]
Other Intangible Assets [Abstract]
Estimated useful life of intangible assets		5 years
Patents [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			723	723
Supply Agreement [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			800	800
Supply Agreement [Member] | General Cable Corporation [Member]
Other Intangible Assets [Abstract]
Estimated useful life of intangible assets		1 year
Leaseholds [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Total acquired intangible assets			160	160
Computer Software [Member]
Other Intangible Assets [Abstract]
Other intangible assets			17,200	16,700
Accumulated computer software amortization			(16,100)	(15,600)
Amortization of computer software			$ 500	$ 600	$ 600
Computer Software [Member] | Minimum [Member]
Other Intangible Assets [Abstract]
Estimated useful life of intangible assets			3 years
Computer Software [Member] | Maximum [Member]
Other Intangible Assets [Abstract]
Estimated useful life of intangible assets			10 years

[1] Applies to all intangible assets, except for trademarks and trade names totaling $5.2 million, which have indefinite useful lives and, as such, are not being amortized.