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Acquisitions, Goodwill And Other Intangible Assets (Schedule of Other Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Assets |  |
Accumulated amortization | $ 125,825 | $ 104,764
Total gross cost | 467,251 | 281,106
Total net balance | 341,426 | 176,342
OEM Segment |  |
Finite-Lived Intangible Assets |  |
Total net balance | 164,047 | 159,803
Aftermarket Segment |  |
Finite-Lived Intangible Assets |  |
Total net balance | 177,379 | 16,539
Purchased Research and Development |  |
Finite-Lived Intangible Assets |  |
Gross cost and net balance | 4,687 | 4,687
Trade name |  |
Finite-Lived Intangible Assets |  |
Gross cost and net balance | 7,600 | 7,600
Customer relationships |  |
Finite-Lived Intangible Assets |  |
Gross cost | 319,934 | 191,919
Accumulated amortization | 69,008 | 54,889
Net balance | $ 250,926 | $ 137,030
Customer relationships | Minimum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 6 years | 6 years
Customer relationships | Maximum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 17 years | 16 years
Patents |  |
Finite-Lived Intangible Assets |  |
Gross cost | $ 76,206 | $ 58,787
Accumulated amortization | 44,611 | 40,079
Net balance | $ 31,595 | $ 18,708
Patents | Minimum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 3 years | 3 years
Patents | Maximum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 19 years | 19 years
Trade name |  |
Finite-Lived Intangible Assets |  |
Gross cost | $ 50,917 | $ 10,885
Accumulated amortization | 7,086 | 5,507
Net balance | $ 43,831 | $ 5,378
Trade name | Minimum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 3 years | 3 years
Trade name | Maximum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 20 years | 15 years
Non-compete agreements |  |
Finite-Lived Intangible Assets |  |
Gross cost | $ 7,598 | $ 6,919
Accumulated amortization | 4,947 | 4,148
Net balance | $ 2,651 | $ 2,771
Non-compete agreements | Minimum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 3 years | 3 years
Non-compete agreements | Maximum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 6 years | 6 years
Other |  |
Finite-Lived Intangible Assets |  |
Gross cost | $ 309 | $ 309
Accumulated amortization | 173 | 141
Net balance | $ 136 | $ 168
Other | Minimum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 2 years | 2 years
Other | Maximum |  |
Finite-Lived Intangible Assets |  |
Estimated useful life in years | 12 years | 12 years

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