Goodwill and Long-Lived Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized intangible assets
Gross Carrying Amount	$ 156,703	$ 51,992
Accumulated Amortization	(20,099)	(11,449)
Customer relationships
Amortized intangible assets
Gross Carrying Amount	141,455	39,474
Accumulated Amortization	(11,453)	(4,460)
Patents
Amortized intangible assets
Gross Carrying Amount	4,333	4,504
Accumulated Amortization	(3,816)	(3,821)
Technology
Amortized intangible assets
Gross Carrying Amount	2,500	2,500
Accumulated Amortization	(810)	(644)
Trade names
Amortized intangible assets
Gross Carrying Amount	7,235	4,288
Accumulated Amortization	(2,840)	(1,461)
License agreements
Amortized intangible assets
Gross Carrying Amount	619	640
Accumulated Amortization	(619)	(640)
Other
Amortized intangible assets
Gross Carrying Amount	561	586
Accumulated Amortization	$ (561)	$ (423)