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Note 6 - Securities Sold Under Agreements to Repurchase - Securities Sold Under Agreement to Repurchase (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Securities sold under agreements to repurchase	$ 251,499	$ 121,521
Average daily balance during the period	238,897	224,878
Maximum daily balance during the period	$ 285,679	$ 278,227
Securities Sold under Agreements to Repurchase [Member]
Average interest rate at end of period	3.19%	2.17%
Average interest rate during the period	3.16%	3.43%

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The average effective interest rate during the reporting period.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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