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Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Gain (loss) on equity securities	[1]	$ 14,000	$ 48,000	$ (65,000)	$ (157,000)
Gain on other real estate owned	[1]	0	0	0	2,000
Earnings on bank-owned life insurance	[1]	246,000	207,000	700,000	627,000
Gain on sale of loans	[1]	56,000	45,000	135,000	74,000
Revenue from investment services		206,000	190,000	679,000	550,000
Miscellaneous fee income		106,000	98,000	301,000	285,000
Gross rental income	[1]	0	110,000	67,000	290,000
Other income		156,000	165,000	643,000	537,000
Total noninterest income		1,743,000	1,817,000	5,299,000	5,088,000
Overdraft Fees [Member]
Noninterest income revenue		249,000	258,000	748,000	734,000
ATM Banking Fees [Member]
Noninterest income revenue		489,000	484,000	1,419,000	1,447,000
Service Charge and Other Fees [Member]
Noninterest income revenue		$ 221,000	$ 212,000	$ 672,000	$ 699,000
[1] Not within scope of ASC 606

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Represents miscellaneous fee income.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

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Amount of fees and commissions from banking, advisory, brokerage, and securities underwriting activities. Activities include, but are not limited to, underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, sale and servicing of mutual funds, and other related consulting fees.

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The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

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