Leases - Additional Operating Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Total Lease Liability	$ 161,209
Right of use assets - operating lease	139,954	$ 142,044
Offices
Lessee, Lease, Description [Line Items]
Total Lease Liability	11,295
Right of use assets - operating lease	8,446
Data Centers
Lessee, Lease, Description [Line Items]
Total Lease Liability	7,807
Right of use assets - operating lease	$ 7,807