Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 6.3	$ 2.8	$ 2.7
Office Facility Leases
Operating Leased Assets [Line Items]
Standby letter of credit	$ 0.2