Leases - Net Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Net lease costs	$ (12,624)	$ (11,200)	$ (14,865)
Variable lease costs	1,300	1,500	1,600
Occupancy
Lessee, Lease, Description [Line Items]
Operating lease costs	(18,773)	(17,346)	(19,502)
Other non-interest income
Lessee, Lease, Description [Line Items]
Sublease revenue	$ 6,149	$ 6,146	$ 4,637