Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 227,633	$ 189,835
Less: accumulated depreciation	(75,992)	(45,311)
Property and equipment, net	151,641	144,524
Vehicles and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	137,033	108,130
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	28,067	21,825
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	26,163	20,849
Software and computers
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	24,068	23,526
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,133	14,041
Assets to be placed into service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,419	0
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,750	$ 1,464