Income Taxes - Schedule of Net Deferred Tax (Liabilities) Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Allowance for credit losses	$ 34,146	$ 35,233
Operating lease liabilities	12,251	12,478
Net operating loss	3,644	1,370
Amortization of core deposit intangibles	53	0
Deferred compensation	2,243	5,484
Unrealized loss on debt securities	26,158	0
Unrealized loss on cash flow hedges	0	205
Other assets	7,684	8,301
Subtotal	86,179	63,071
Deferred tax liabilities:
FHLB stock dividends	(484)	(484)
Operating leases - right of use assets	(11,111)	(11,287)
Depreciation	(7,930)	(7,938)
Amortization of core deposit intangibles	0	(116)
Unrealized gain on equity securities	(2,167)	(2,407)
Unrealized gain on cash flow hedges	(68)	0
Unrealized gain on debt securities	0	(1,324)
Mortgage servicing rights	(37,696)	(30,098)
Goodwill	(14,276)	(13,743)
Other liabilities	(2,699)	(2,494)
Subtotal	(76,431)	(69,891)
Net deferred tax assets	$ 9,748
Net deferred tax liability		$ (6,820)