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Note 4 - Investment Securities (Details Textual) $ in Thousands	Apr. 01, 2022 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-Sale, Allowance for Credit Loss		$ 0
Debt Securities, Available-for-Sale, Increase to the Carrying Value Resulting From Derivative Instrument That Increased the Unrealized Loss Position		$ 600	$ 2,200
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions		418	416
Debt Securities, Available-for-sale, Amortized Cost, Transfer, Amount	$ 245,500
Debt Securities, Available-for-Sale, Amortized Cost, Net of Gain (Loss), Transfer	221,700
Debt Securities, Available-for-Sale, Transfer to Held to Maturity, Gain (Loss)	$ 18,900
Debt Securities, Held-to-Maturity, Allowance for Credit Loss		$ 0
Asset Pledged as Collateral [Member] | Deposits [Member]
Debt Securities		404,800
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Increase From Derivative Instruments		$ 300
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions		237
US States and Political Subdivisions Debt Securities [Member] | Measurement Input, Loss Severity [Member]
Debt Securities, Available-for-Sale, Measurement Input		0.1344
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions		46
US Government Agencies Debt Securities [Member] | Measurement Input, Loss Severity [Member]
Debt Securities, Available-for-Sale, Measurement Input		0.1103
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions		135
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] | Measurement Input, Loss Severity [Member]
Debt Securities, Available-for-Sale, Measurement Input		0.1545
Accrued Interest Receivable [Member]
Interest Receivable, Investment Securities		$ 3,000	$ 3,400

X

- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), net of gains (losses) on transfer.

+ References

No definition available.

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