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Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016
--- | --- | --- | ---
Other |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | $ 90,692 |  | $ 77,387
Accumulated Amortization | (34,985) | $ (30,048) | (30,048)
Net Carrying Amount | 55,707 | $ 47,339 | 47,339
Patents |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 15,972 |  | 14,130
Accumulated Amortization | (3,586) |  | (3,165)
Net Carrying Amount | 12,386 |  | 10,965
Distribution agreements |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 6,626 |  | 6,626
Accumulated Amortization | (4,248) |  | (3,527)
Net Carrying Amount | 2,378 |  | 3,099
License agreements |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 23,804 |  | 20,695
Accumulated Amortization | (4,387) |  | (3,422)
Net Carrying Amount | 19,417 |  | 17,273
Trademarks |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 16,220 |  | 12,380
Accumulated Amortization | (4,342) |  | (3,330)
Net Carrying Amount | 11,878 |  | 9,050
Covenants not to compete |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 1,028 |  | 1,028
Accumulated Amortization | (961) |  | (936)
Net Carrying Amount | 67 |  | 92
Customer lists |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 25,942 |  | 22,261
Accumulated Amortization | (17,461) |  | (15,401)
Net Carrying Amount | 8,481 |  | 6,860
In-process technology |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 1,100 |  |
Accumulated Amortization | 0 |  |
Net Carrying Amount | $ 1,100 |  |
Royalty agreements |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount |  |  | 267
Accumulated Amortization |  |  | (267)
Net Carrying Amount |  |  | $ 0

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