Acquisitions, Goodwill And Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill
Net balance, Beginning	$ 180,168	$ 124,183
Acquisitions	172,423	56,067
Other	(1,477)	(82)
Net balance, Ending	351,114	180,168
OEM Segment
Goodwill
Net balance, Beginning	160,257	109,641
Acquisitions	57,245	50,698
Other	(1,882)	(82)
Net balance, Ending	215,620	160,257
Aftermarket Segment
Goodwill
Net balance, Beginning	19,911	14,542
Acquisitions	115,178	5,369
Other	405	0
Net balance, Ending	$ 135,494	$ 19,911

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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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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