Commitments and Contingencies (Future Minimum Lease Commitments) (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Operating and Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] [Abstract]
Sublease income netted with future minimum lease commitments	$ 2,100
2016	5,465
2017	7,872
2018	8,142
2019	8,686
2020	8,951
Thereafter	51,410
Total	$ 90,526