Leases - Additional Information (Details) $ in Thousands		1 Months Ended	12 Months Ended
	Oct. 07, 2020 USD ($) ft²	Mar. 31, 2018 ft²	Dec. 31, 2020 USD ($) lease	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Lessee Lease Description [Line Items]
Number of additional operating leases | lease			3
Weighted average incremental borrowing rate			5.25%
Weighted average remaining lease term			12 years 7 months 6 days
Area of real estate property | ft²	180,000	220,000
Annual lease payments			$ 195,806	$ 15,888
Lessee operating lease term of option to extend	5 years
Lease, commencement date		Jan. 20, 2020
Lease agreement option to extend renewal term		10 years
Right-of-use assets			131,718	12,379
Operating lease liabilities			135,196	13,808
Payments for operating leases			17,300	9,100
Operating lease expense			$ 16,300	$ 8,100	$ 10,800
Base Premises
Lessee Lease Description [Line Items]
Area of real estate property | ft²	163,000
Lease period	5 years
Lease agreement commencement period	2021-03
Lease, expiration period	2026-04
Annual lease payments	$ 5,700
Additional Premises
Lessee Lease Description [Line Items]
Area of real estate property | ft²	17,000
Lease agreement commencement period	2021-09
Lease, expiration period	2026-10
Annual lease payments	$ 500