Acquisitions, Goodwill And Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Goodwill
Net balance, Beginning	$ 351,114	$ 180,168
Acquisitions	85,297	172,423
Other		(1,477)
Measurement period adjustments	10,362
Foreign currency translation	7,955
Net balance, Ending	454,728	351,114
OEM Segment
Goodwill
Net balance, Beginning	215,620	160,257
Acquisitions	84,774	57,245
Other		(1,882)
Measurement period adjustments	(2,251)
Foreign currency translation	7,810
Net balance, Ending	305,953	215,620
Aftermarket Segment
Goodwill
Net balance, Beginning	135,494	19,911
Acquisitions	523	115,178
Other		405
Measurement period adjustments	12,613
Foreign currency translation	145
Net balance, Ending	$ 148,775	$ 135,494

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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