Leases - Summary of Operating Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Operating lease right of use assets, gross	$ 185,830	$ 164,680
Amortization of right-of-use assets	(46,641)	(30,715)
Total operating lease right-of-use assets	139,189	133,965
Real Estate Facilities
Lessee Lease Description [Line Items]
Operating lease right of use assets, gross	182,437	162,150
Office Equipment
Lessee Lease Description [Line Items]
Operating lease right of use assets, gross	2,458	1,595
Other
Lessee Lease Description [Line Items]
Operating lease right of use assets, gross	$ 935	$ 935