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Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Loss on equity securities	[1]	$ (27,000)	$ (67,000)	$ (79,000)	$ (205,000)
Gain on other real estate owned	[1]	0	0	0	2,000
Earnings on bank-owned life insurance	[1]	227,000	220,000	454,000	420,000
Gain on sale of loans	[1]	69,000	6,000	79,000	29,000
Revenue from investment services		269,000	174,000	473,000	359,000
Miscellaneous fee income		101,000	97,000	195,000	185,000
Gross rental income	[1]	0	77,000	67,000	179,000
Other income		150,000	145,000	487,000	375,000
Total noninterest income		1,760,000	1,592,000	3,556,000	3,270,000
Overdraft Fees [Member]
Noninterest income revenue		248,000	229,000	497,000	476,000
ATM Banking Fees [Member]
Noninterest income revenue		491,000	491,000	932,000	963,000
Service Charge and Other Fees [Member]
Noninterest income revenue		$ 232,000	$ 220,000	$ 451,000	$ 487,000
[1] Not within scope of ASC 606

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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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