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v3.19.2

Segment Reporting (Schedule of Operating Profit by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Segment Reporting Information |  |  |  |
Operating profit | $ 65,657 | $ 64,088 | $ 113,412 | $ 123,908
Operating Segments | OEM Segment |  |  |  |
Segment Reporting Information |  |  |  |
Operating profit | 52,679 | 53,591 | 93,087 | 107,531
Operating Segments | Aftermarket Segment |  |  |  |
Segment Reporting Information |  |  |  |
Operating profit | $ 12,978 | $ 10,497 | $ 20,325 | $ 16,377

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