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Acquisitions, Goodwill And Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Goodwill |  |
Net balance, Beginning | $ 124,183 | $ 89,198
Acquisitions | 56,067 | 29,772
Other | (82) | 5,213
Net balance, Ending | 180,168 | 124,183
OEM Segment |  |
Goodwill |  |
Net balance, Beginning | 109,641 | 74,663
Acquisitions | 50,698 | 29,772
Other | (82) | 5,206
Net balance, Ending | 160,257 | 109,641
Aftermarket Segment |  |
Goodwill |  |
Net balance, Beginning | 14,542 | 14,535
Acquisitions | 5,369 | 0
Other | 0 | 7
Net balance, Ending | $ 19,911 | $ 14,542

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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