Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Goodwill By Reportable Segment) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Segment Reporting Information
Net balance – December 31, 2015	$ 83,619
Acquisitions	10,512
Other	(300)
Net balance – June 30, 2016	93,831
OEM Segment
Segment Reporting Information
Net balance – December 31, 2015	79,206
Acquisitions	10,512
Other	(300)
Net balance – June 30, 2016	89,418
Aftermarket Segment
Segment Reporting Information
Net balance – December 31, 2015	4,413
Acquisitions	0
Other	0
Net balance – June 30, 2016	$ 4,413