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Note 2 - Investment Securities (Details Textual) $ in Thousands	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Securities, Held-to-Maturity, Number of Securities	0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss	$ 0
Debt Securities, Held-to-Maturity, Nonaccrual	0	$ 0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	5,000
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss		$ 6,000
Debt Securities, Available-for-Sale, Allowance for Credit Loss	$ 0
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	514	498
Debt Securities, Available-for-Sale, Unrealized Loss Position, Percentage	99.00%	98.00%
Collateral Pledged [Member]
Debt Securities, Available-for-Sale, Restricted	$ 839,000	$ 991,000

X

- Definition

Percentage of portfolio of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.

+ References

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Number of held-to-maturity securities, debt securities.

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- Definition

Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at amortized cost (held-to-maturity).

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