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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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