Commitments and Contingencies - Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Operating Leases
Lease Term			6 years
As Lessor
Remainder of 2016	$ 4,186		$ 4,186
2017	16,743		16,743
2018	16,743		16,743
2019	16,743		16,743
2020	15,587		15,587
Thereafter	14,153		14,153
Total future minimum lease payments	84,155		84,155
As Lessee
Remainder of 2016	3,077		3,077
2017	12,350		12,350
2018	12,125		12,125
2019	10,936		10,936
2020	9,802		9,802
Thereafter	6,105		6,105
Total future minimum lease payments	54,395		54,395
Rental expense and rental income for all operating leases
Rental expense for all operating lease	3,700	$ 1,600	10,100	$ 3,800
Other assets.
Rental expense and rental income for all operating leases
Prepaid rent and security deposit	$ 11,900		$ 11,900		$ 12,100