Intangible Assets and Goodwill - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, gross	$ 93,274		$ 93,274		$ 7,483
Less accumulated amortization	(7,076)		(7,076)		(4,733)
Total net amortizable intangibles	86,198		86,198		2,750
Intangible assets, net of accumulated amortization	86,714		86,714		3,266
Amortization expense	1,257	$ 261	2,397	$ 521
Trademarks and other
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Non-amortizable intangibles	516		$ 516		516
Distribution agreement
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			2 years
Amortizable Intangibles, gross	3,021		$ 3,021		3,021
Certification
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			7 years
Amortizable Intangibles, gross	350		$ 350		350
Customer relationships
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			20 years
Amortizable Intangibles, gross	77,459		$ 77,459		1,191
Patents and processes
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			10 years
Amortizable Intangibles, gross	1,947		$ 1,947		1,998
Brand names
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			10 years
Amortizable Intangibles, gross	$ 10,497		$ 10,497		$ 923
Minimum | Customer relationships
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			12 years
Minimum | Brand names
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			10 years
Maximum | Customer relationships
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			20 years
Maximum | Brand names
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Amortizable Intangibles, useful lives			15 years