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Note 4 - Securities (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Debt Securities, Available-for-Sale [Table Text Block]

September 30, 2025		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
U.S. government agencies and corporations		$	322,309			$	-			$	26,437			$	295,872
States and political subdivisions			177,617				-				25,612				152,005
Mortgage-backed securities			181,664				32				4,033				177,663
Corporate debt securities			5,507				-				564				4,943
Total securities available for sale		$	687,097			$	32			$	56,646			$	630,483

December 31, 2024		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
U.S. government agencies and corporations		$	351,136			$	-			$	40,012			$	311,124
States and political subdivisions			178,106				-				32,372				145,734
Mortgage-backed securities			143,747				24				5,473				138,298
Corporate debt securities			6,507				-				764				5,743
U.S. treasury			1,000				-				1				999
Total securities available for sale		$	680,496			$	24			$	78,622			$	601,898

Gain (Loss) on Securities [Table Text Block]

		Less Than 12 Months								12 Months or More
September 30, 2025		Fair Value				Gross Unrealized Losses				Fair Value				Gross Unrealized Losses
U.S. government agencies and corporations		$	-			$	-			$	295,872			$	26,437
State and political subdivisions			-				-				151,620				25,612
Mortgage-backed securities			50,254				396				101,193				3,637
Corporate debt securities			-				-				4,943				564
Total temporarily impaired securities		$	50,254			$	396			$	553,628			$	56,250

		Less Than 12 Months								12 Months or More
December 31, 2024		Fair Value				Gross Unrealized Losses				Fair Value				Gross Unrealized Losses
U.S. government agencies and corporations		$	-			$	-			$	311,124			$	40,012
State and political subdivisions			885				118				144,849				32,254
Mortgage-backed securities			5,336				28				115,011				5,445
Corporate debt securities			-				-				5,743				764
U.S. treasury			-				-				999				1
Total temporarily impaired securities		$	6,221			$	146			$	577,726			$	78,476

Investments Classified by Contractual Maturity Date [Table Text Block]

September 30, 2025		Amortized Cost				Fair Value
Available for Sale:
Due in one year or less		$	21,930			$	21,781
Due after one year through five years			224,100				213,221
Due after five years through ten years			223,667				196,423
Due after ten years			217,400				199,058
Total securities available for sale		$	687,097			$	630,483

X

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