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Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization (Definite-lived) | $ 43,502 | $ 45,026
Accumulated amortization | (27,924) | (27,034)
Net intangible assets subject to amortization | 15,578 | 17,992
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract] |  |
Intangible assets, net | 17,656 | 20,475
Trade names |  |
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract] |  |
Intangible assets not subject to amortization (Indefinite-lived) | 2,078 | 2,483
Patents and acquired technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization (Definite-lived) | 9,067 | 9,439
Accumulated amortization | (4,103) | (3,839)
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization (Definite-lived) | 20,941 | 21,810
Accumulated amortization | (10,399) | (9,657)
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization (Definite-lived) | 1,674 | 1,693
Accumulated amortization | (1,674) | (1,688)
Non-competition agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization (Definite-lived) | 11,820 | 12,084
Accumulated amortization | $ (11,748) | $ (11,850)

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