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Industry Segments (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Segment	Sep. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | Segment				2
Net sales	[1]	$ 281,058	$ 300,795	$ 876,165	$ 828,683
Operating Income		26,919	33,574	82,107	85,437
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		0	0	0	0
Engine Management [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	196,776	200,782	631,439	580,311
Operating Income		22,729	29,745	76,503	84,497
Engine Management [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		6,207	5,189	19,350	15,878
Engine Management [Member] | Ignition, Emission and Fuel System Parts [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	155,544	157,108	498,802	477,242
Engine Management [Member] | Wire and Cable [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	41,232	43,674	132,637	103,069
Temperature Control [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	81,160	96,819	238,841	241,088
Operating Income		7,714	9,283	19,943	17,097
Temperature Control [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		1,952	2,354	6,076	6,069
Temperature Control [Member] | Compressors [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	44,733	53,941	132,278	130,941
Temperature Control [Member] | Other Climate Control Parts [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	36,427	42,878	106,563	110,147
All Other [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	3,122	3,194	5,885	7,284
Operating Income		(3,524)	(5,454)	(14,339)	(16,157)
All Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		$ (8,159)	$ (7,543)	$ (25,426)	$ (21,947)
[1] Segment and product line net sales include intersegment sales in our Engine Management and Temperature Control segments.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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