Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash Flows from Operating Activities
Net income	$ 5,752	$ 4,168	$ 15,131	$ 11,129
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for (recovery of) loan losses	(392)	154	(338)	1,985	$ 1,991
Depreciation of bank premises and equipment			484	529
Amortization of premiums and accretion of discounts, net			1,266	1,016
Gain on disposal of fixed assets			0	(2)
Gain on sales and calls of securities available for sale, net			(5)	(96)
Loss (gain) and write-down on other real estate owned, net			25	(13)
Loss on sale of repossessed assets, net			0	1
Increase in cash value of bank-owned life insurance			(664)	(659)
Origination of mortgage loans held for sale			(13,320)	(27,929)
Proceeds from sale of mortgage loans held for sale			14,238	25,560
Gain on sale of mortgage loans held for sale	(76)	(165)	(287)	(416)
Net change in:
Accrued interest receivable			(133)	(953)
Other assets			1,293	(136)
Accrued interest payable			(10)	(58)
Other liabilities			(1)	192
Net cash provided by operating activities			17,679	10,150
Cash Flows from Investing Activities
Net change in interest-bearing deposits			1,862	8,102
Proceeds from calls, principal payments, sales and maturities of securities available for sale			46,887	116,567
Purchase of securities available for sale			(153,627)	(154,781)
Net change in restricted stock			434	(59)
Purchase of loan participations			(20,544)	(4,273)
Collection of loan participations			3,759	122
Loan originations and principal collections, net			(12,661)	(63,695)
Proceeds from sale of other real estate owned			621	72
Proceeds from sale of repossessed assets			11	30
Recoveries on loans charged off			245	219
Purchase of bank-owned life insurance			(5,000)	0
Proceeds from sale and purchases of premises and equipment, net			(272)	(1,632)
Net cash used in investing activities			(138,285)	(99,328)
Cash Flows from Financing Activities
Net change in time deposits			(7,127)	(25,020)
Net change in other deposits			142,718	118,849
Common stock repurchased			(12,085)	0
Cash dividends paid			(4,319)	(4,348)
Net cash provided by financing activities			119,187	89,481
Net change in cash and due from banks			(1,419)	303
Cash and due from banks at beginning of period			13,147	10,290	10,290
Cash and due from banks at end of period	11,728	10,593	11,728	10,593	$ 13,147
Supplemental Disclosures of Cash Flow Information
Interest paid on deposits			2,418	4,872
Income taxes paid			2,150	2,785
Supplemental Disclosure of Noncash Activities
Loans charged against the allowance for loan losses			690	639
Loans transferred to OREO			50	0
Loans transferred to repossessed assets			11	4
Unrealized gain (loss) on securities available for sale			(10,736)	14,794
Lease liabilities arising from obtaining right-of-use assets	$ 0	$ 23	$ 0	$ 23