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Note 5 - Derivatives and Hedging Activities (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Federal Home Loan Bank Advances and Certificates of Deposit [Member]
Interest Expense, Debt	$ 205,000	$ 498,000	$ 568,000	$ 1,200,000
Interest Rate Swap [Member]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	121,000		603,000
Interest Payable	$ 98,000		$ 98,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Number of Interest Rate Derivatives Held	6		6		5
Derivative, Notional Amount	$ 85,000,000		$ 85,000,000		$ 65,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Number of Interest Rate Derivatives Held	2		2
Derivative, Notional Amount	$ 60,000,000		$ 60,000,000

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