Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Finance lease cost:
Total	$ 3,887	$ 6,873	$ 7,451	$ 16,171
occupancy/equipment expense
Lessee, Lease, Description [Line Items]
Operating lease cost	3,092	6,646	6,393	15,827
occupancy expense
Finance lease cost:
Amortization of right-of-use assets	810	256	1,121	423
Short-term lease cost	0	1	0	1
Sub-lease income	(135)	(121)	(278)	(249)
interest expense
Finance lease cost:
Interest on lease liabilities	$ 120	$ 91	$ 215	$ 169