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Note 3 - Securities - Schedule of Expected Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Available for sale securities, amortized cost, within one year	$ 2,341
Available for sale securities, within one year	2,331
Available for sale securities, amortized cost, one to five years	53,030
Available for sale securities, one to five years	48,023
Available for sale securities, amortized cost, five to ten years	173,755
Available for sale securities, five to ten years	157,733
Available for sale securities, amortized cost, beyond ten years	505,193
Available for sale securities, beyond ten years	407,963
Available for sale securities, amortized cost, mortgage-backed, collateralized mortgage obligations and Small Business Administration securities	770,779
Available for sale securities, mortgage-backed, collateralized mortgage obligations and Small Business Administration securities	665,363
Available for sale securities, amortized cost	1,505,098	$ 1,510,681
Available for sale securities	$ 1,281,413	$ 1,266,553

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