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