Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 39,081	$ 49,176
Less: accumulated depreciation and amortization	(20,941)	(30,140)
Property and equipment, net	18,140	19,036
Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	14,372	19,065
Computers and Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	20,129	9,635
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	756	1,112
Other Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,587	3,067
Vehicles
Property Plant And Equipment [Line Items]
Property and equipment, gross	10	80
Construction in Process
Property Plant And Equipment [Line Items]
Property and equipment, gross	134	14,433
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,093	$ 1,784