Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 60,432	$ 64,288
Allowance for loan and lease losses	84,119	89,718
Stock-based compensation	7,399	10,121
Unrealized loss on AFS securities	12,484	17,214
Deferred compensation	6,574	12,690
Reserves and accruals	12,651	13,474
Operating lease liabilities	10,185	20,999
Goodwill	10,203	12,267
Tax credit carryforwards	27,924	26,913
Other	3,926	4,249
Gross deferred tax assets	235,897	271,933
Valuation allowance	(46,108)	(47,721)
Total deferred tax assets	189,789	224,212
Deferred tax liabilities:
Internally developed software	(9,934)	(11,687)
Servicing assets	(2,171)	(2,634)
Operating lease assets	(7,157)	(17,353)
Leases	(13,121)	(15,694)
Other	(5,995)	(3,157)
Total deferred tax liabilities	(38,378)	(50,525)
Deferred tax assets, net	$ 151,411	$ 173,687