Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Goodwill By Reportable Segment) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Segment Reporting Information
Net balance – beginning of period	$ 454,728
Acquisitions	2,000
Measurement period adjustments	1,295
Foreign currency translation	(3,641)
Net balance – end of period	454,382
OEM Segment
Segment Reporting Information
Net balance – beginning of period	305,953
Acquisitions	2,000
Measurement period adjustments	1,250
Foreign currency translation	(3,670)
Net balance – end of period	305,533
Aftermarket Segment
Segment Reporting Information
Net balance – beginning of period	148,775
Acquisitions	0
Measurement period adjustments	45
Foreign currency translation	29
Net balance – end of period	$ 148,849