Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net income	$ 32,888	$ 20,691	$ 20,004
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Gain on sale of securities, net	(98)	(23)	0
Loss on sale of premises and equipment	22	0	2
Depreciation and amortization of premises	3,147	2,986	2,283
Amortization of software	1,104	1,019	911
Intangible asset amortization	48	60	70
Amortization of investment security premium, net of discount accretion	19	(15)	199
Unrealized (gain) loss on marketable equity securities	(61)	(911)	625
Deferred tax expense	555	711	3,014
Stock-based compensation	943	832	816
Deferral of loan fees and amortization, net of costs	6,650	598	331
Provision (benefit) for loan losses	2,432	(1,175)	(500)
Benefit for purchased receivables	(21)	(96)	(10)
Additions to home mortgage servicing rights carried at fair value	(4,824)	(3,707)	(3,641)
Change in fair value of home mortgage servicing rights carried at fair value	5,526	2,608	125
Change in fair value of commercial servicing rights carried at fair value	99	(6)	(972)
Gain on sale of loans	(46,258)	(19,813)	(14,822)
Proceeds from the sale of loans held for sale	1,263,325	670,986	551,607
Origination of loans held for sale	(1,295,411)	(684,297)	(527,516)
Gain on sale of other real estate owned	(391)	(380)	(3)
Impairment on equity method investment	0	0	804
Net changes in assets and liabilities:
(Increase) decrease in accrued interest receivable	(3,467)	305	(432)
(Increase) decrease in other assets	(15,096)	6,395	(2,512)
Increase (decrease) in other liabilities	12,415	2,411	(5,233)
Net Cash (Used) Provided by Operating Activities	(36,454)	(821)	25,150
Investment in securities:
Purchases of investment securities available for sale	(160,423)	(132,104)	(88,139)
Purchases of marketable equity securities	(1,552)	0	(2,992)
Purchases of FHLB stock	(5,931)	(880)	0
Purchases of investment securities held to maturity	(10,000)	0	0
Proceeds from sales/calls/maturities of securities available for sale	189,323	130,482	122,644
Proceeds from sales of marketable equity securities	601	229	783
Proceeds from redemption of FHLB stock	5,518	843	14
Decrease (increase) in purchased receivables, net	10,472	(9,871)	7,835
Increase in loans, net	(408,365)	(58,879)	(31,852)
Proceeds from sale of other real estate owned	797	1,299	1,522
Investment in other real estate owned	0	0	(144)
Purchases of software	(416)	(721)	(517)
Proceeds from sales of premises and equipment	0	0	3
Purchases of premises and equipment	(2,849)	(2,318)	(3,511)
Net Cash (Used) Provided by Investing Activities	(382,825)	(71,920)	5,646
Financing Activities:
Increase (decrease) in deposits	452,630	144,263	(30,195)
(Decrease) increase in securities sold under repurchase agreements	0	(34,278)	6,532
Proceeds from borrowings	110,610	1,817	0
Repayments of borrowings	(104,684)	(167)	(121)
Proceeds from the issuance of common stock	84	73	243
Repurchase of common stock	(9,976)	(12,569)	(494)
Cash dividends paid	(8,844)	(8,512)	(7,064)
Net Cash Provided (Used) by Financing Activities	439,820	90,627	(31,099)
Net Change in Cash and Cash Equivalents	20,541	17,886	(303)
Cash and Cash Equivalents at Beginning of Year	95,424	77,538	77,841
Cash and Cash Equivalents at End of Year	115,965	95,424	77,538
Supplemental Information:
Income taxes paid	7,790	1,658	1,766
Interest paid	6,009	5,640	2,971
Noncash commitments to invest in Low Income Housing Tax Credit Partnerships	0	11,267	0
Transfer of loans to other real estate owned	652	0	686
Non-cash lease liability arising from obtaining right of use assets	370	1,234
Cash dividends declared but not paid	$ 98	$ 89	$ 72