Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities:
Net income	$ 37,517	$ 32,888	$ 20,691
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Gain on sale of securities, net	(67)	(98)	(23)
Loss on sale of premises and equipment	0	22	0
Depreciation and amortization of premises	3,276	3,147	2,986
Amortization of software	1,161	1,104	1,019
Intangible asset amortization	37	48	60
Amortization of investment security premium, net of discount accretion	529	19	(15)
Unrealized loss (gain) on marketable equity securities	101	(61)	(911)
Deferred tax (income) expense	(1,298)	555	711
Stock-based compensation	1,073	943	832
Deferral of loan fees and amortization, net of costs	(192)	6,650	598
(Benefit) provision for credit losses	(4,099)	2,432	(1,175)
Benefit for purchased receivables	0	(21)	(96)
Additions to home mortgage servicing rights carried at fair value	(6,088)	(4,824)	(3,707)
Change in fair value of home mortgage servicing rights carried at fair value	3,582	5,526	2,608
Change in fair value of commercial servicing rights carried at fair value	437	99	(6)
Gain on sale of loans	(36,436)	(46,258)	(19,813)
Proceeds from the sale of loans held for sale	1,227,150	1,263,325	670,986
Origination of loans held for sale	(1,118,186)	(1,295,411)	(684,297)
Gain on sale of other real estate owned	(685)	(391)	(380)
Net changes in assets and liabilities:
Decrease (increase) in accrued interest receivable	1,133	(3,467)	305
Decrease (increase) in other assets	12,739	(15,096)	6,395
(Decrease) increase in other liabilities	(9,695)	12,415	2,411
Net Cash Provided (Used) by Operating Activities	111,989	(36,454)	(821)
Investment in securities:
Purchases of investment securities available for sale	(320,501)	(160,423)	(132,104)
Purchases of marketable equity securities	(493)	(1,552)	0
Purchases of FHLB stock	(573)	(5,931)	(880)
Purchases of investment securities held to maturity	(10,000)	(10,000)	0
Proceeds from sales/calls/maturities of securities available for sale	135,365	189,323	130,482
Proceeds from sales of marketable equity securities	1,084	601	229
Proceeds from redemption of FHLB stock	17	5,518	843
Decrease (increase) in purchased receivables, net	6,935	10,472	(9,871)
Decrease in loans, net	28,975
Increase in loans, net		(408,365)	(58,879)
Proceeds from sale of other real estate owned	2,610	797	1,299
Purchases of software	(170)	(416)	(721)
Purchases of premises and equipment	(2,338)	(2,849)	(2,318)
Net Cash (Used) Provided by Investing Activities	(159,089)	(382,825)	(71,920)
Financing Activities:
Increase in deposits	596,650	452,630	144,263
(Decrease) increase in securities sold under repurchase agreements	0	0	(34,278)
Proceeds from borrowings	0	110,610	1,817
Repayments of borrowings	(309)	(104,684)	(167)
Proceeds from the issuance of common stock	1,543	84	73
Repurchase of common stock	(11,534)	(9,976)	(12,569)
Cash dividends paid	(9,388)	(8,844)	(8,512)
Net Cash Provided by Financing Activities	576,962	439,820	90,627
Net Change in Cash and Cash Equivalents	529,862	20,541	17,886
Cash and Cash Equivalents at Beginning of Year	115,965	95,424	77,538
Cash and Cash Equivalents at End of Year	645,827	115,965	95,424
Supplemental Information:
Income taxes paid	6,380	7,790	1,658
Interest paid	3,813	6,009	5,640
Noncash commitments to invest in Low Income Housing Tax Credit Partnerships	0	0	11,267
Transfer of loans to other real estate owned	274	652	0
Loans made to facilitate sales of other real estate owned	1,012	0	0
Non-cash lease liability arising from obtaining right of use assets	79	370	1,234
Cash dividends declared but not paid	92	98	89
Cumulative effect adjustment to retained earnings	$ 2,400	$ (139)	$ 0