Property and Equipment, Net - (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation and amortization	$ (16,391)	$ (9,752)
Property and equipment, net	125,996	60,592
Land and site improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,474	9,355
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	52,458	14,750
Transportation fleet
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,262	16,520
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,673	10,065
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,728	3,704
Property and equipment excluding construction in progress, net
Property, Plant and Equipment [Line Items]
Property and equipment, gross	119,595	54,394
Property and equipment, net	103,204	44,642
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 22,792	$ 15,950