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Note 3 - Securities (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Equity Securities, FV-NI, Current	$ 3,274,000		$ 3,274,000		$ 3,132,000
Equity Securities, FV-NI, Realized Gain (Loss)	0	$ 0	0	$ 0
Equity Securities, FV-NI, Unrealized Gain (Loss)	(141,000)	$ (144,000)	60,000	$ (141,000)
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	$ 4,164,000,000		$ 4,164,000,000
Number of Debt Securities, Available-for-sale, Sold	0	0	18	24
Debt Securities, Available-for-Sale, Book Value of Securities Sold			$ 28,258,000	$ 42,791,000
Debt Securities, Available-for-Sale, Realized Gain			106,000	215,000
Debt Securities, Available-for-Sale, Realized Loss				72,000
Debt Securities, Available-for-Sale, Realized Gain (Loss)				143,000
Asset Pledged as Collateral [Member] | Public Funds [Member]
Debt Securities	$ 305,109,000		305,109,000		$ 288,199,000
Debt Securities, Called During The Period [member]
Debt Securities, Realized Gain (Loss)	$ (8,000)	$ 13,000	$ (9,000)	$ 13,000

X

- Definition

Amount of book value of available for sale securities sold.

+ References

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Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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