Property and Equipment, net - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Capital Leased Assets [Line Items]
Depreciation and amortization expense	$ 11.2	$ 6.4	$ 3.0
Vehicles
Capital Leased Assets [Line Items]
Accumulated depreciation for assets under capital leases	5.8	1.2
Amortization of capital leased asset	$ 5.3	$ 1.2