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Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 128,702 | $ 97,680
Accumulated Amortization | (49,136) | (38,127)
Net Carrying Amount | 79,566 | 59,553
Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 19,378 | 16,528
Accumulated Amortization | (5,012) | (3,737)
Net Carrying Amount | 14,366 | 12,791
Distribution agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 8,012 | 7,262
Accumulated Amortization | (5,766) | (4,686)
Net Carrying Amount | 2,246 | 2,576
License agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 26,930 | 23,783
Accumulated Amortization | (7,411) | (5,568)
Net Carrying Amount | 19,519 | 18,215
Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 29,998 | 16,224
Accumulated Amortization | (6,586) | (4,686)
Net Carrying Amount | 23,412 | 11,538
Covenants not to compete |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,028 | 1,028
Accumulated Amortization | (1,000) | (968)
Net Carrying Amount | 28 | 60
Customer lists |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 39,936 | 31,935
Accumulated Amortization | (23,361) | (18,482)
Net Carrying Amount | 16,575 | 13,453
In-process technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 3,420 | 920
Accumulated Amortization | 0 | 0
Net Carrying Amount | $ 3,420 | $ 920

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