Property, Plant, and equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 34,003		$ 22,390
Less accumulated depreciation	(8,728)		(7,390)
Property, Plant and Equipment, Net, Total	25,275		15,000
Depreciation and amortization expense	1,250	$ 536
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,656		6,616
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	11,797		10,665
Vehicles and accessories
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,916
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,219		927
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	794		771
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	865		407
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	660		660
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,096		$ 2,344