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Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Gain (loss) on equity securities ?ª?		$ 17,000	$ 14,000	$ (24,000)	$ (65,000)
Earnings on bank-owned life insurance	[1]	228,000	246,000	951,000	700,000
Gain on sale of loans	[1]	158,000	56,000	221,000	135,000
Revenue from investment services		306,000	206,000	884,000	679,000
Gain on exchange of real estate ?ª?		0	0	1,229,000	0
Miscellaneous fee income		105,000	106,000	295,000	301,000
Gross rental income	[1]	0	0	0	67,000
Other income		439,000	156,000	668,000	643,000
Total noninterest income		2,324,000	1,743,000	7,346,000	5,299,000
Overdraft Fees [Member]
Noninterest income revenue		268,000	249,000	787,000	748,000
ATM Banking Fees [Member]
Noninterest income revenue		479,000	489,000	1,394,000	1,419,000
Service Charge and Other Fees [Member]
Noninterest income revenue		$ 324,000	$ 221,000	$ 941,000	$ 672,000
[1] Not within scope of ASC 606

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The gain (loss) on the exchange of real estate.

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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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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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