Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest income:
Interest and fees on loans	$ 11,135,000	$ 12,592,000	$ 13,076,000
Interest and dividends on securities:
U. S. Treasuries	3,173,000	663,000	657,000
U.S. Government agencies		95,000	199,000
Mortgage-backed securities	2,586,000	2,076,000	2,530,000
Collateralized mortgage obligations	1,919,000	860,000	466,000
States and political subdivisions	4,460,000	3,903,000	2,126,000
Other investments	27,000	8,000	27,000
Interest on balances due from depository institutions	408,000	95,000	227,000
Total interest income	23,708,000	20,292,000	19,308,000
Interest expense:
Deposits	1,985,000	806,000	1,549,000
Borrowings from Federal Home Loan Bank	173,000	24,000	32,000
Total interest expense	2,158,000	830,000	1,581,000
Net interest income	21,550,000	19,462,000	17,727,000
Provision for (reduction of) allowance for loan losses	80,000	(5,663,000)	6,002,000
Net interest income after provision for (reduction of) allowance for loan losses	21,470,000	25,125,000	11,725,000
Non-interest income:
(Loss) gain on liquidation, sales and calls of securities		(45,000)	539,000
Increase in cash surrender value of life insurance	445,000	435,000	484,000
Gain from death benefits from life insurance			224,000
Gain on sale of buildings			318,000
Other income	771,000	586,000	543,000
Total non-interest income	6,895,000	6,470,000	7,251,000
Non-interest expense:
Salaries and employee benefits	11,341,000	10,614,000	10,367,000
Net occupancy	1,755,000	1,918,000	1,865,000
Equipment rentals, depreciation and maintenance	2,905,000	2,914,000	3,044,000
Other expense	5,854,000	7,176,000	6,258,000
Total non-interest expense	21,855,000	22,622,000	21,534,000
Income (loss) before income taxes	6,510,000	8,973,000	(2,558,000)
Income tax (benefit) expense	(2,431,000)	62,000	0
Net income (loss)	$ 8,941,000	$ 8,911,000	$ (2,558,000)
Basic and diluted earnings (loss) per share (in dollars per share)	$ 1.91	$ 1.84	$ (0.52)
Dividends declared per share (in dollars per share)	$ 0.19	$ 0.16	$ 0.02
Trust Department Income and Fees [Member]
Non-interest income:
Revenue from contract with customer	$ 2,001,000	$ 1,849,000	$ 1,695,000
Service Charges on Deposit Accounts [Member]
Non-interest income:
Revenue from contract with customer	$ 3,678,000	$ 3,645,000	$ 3,448,000