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Note 4 - Securities (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

March 31, 2025		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
U.S. government agencies and corporations		$	340,195			$	-			$	33,268			$	306,927
States and political subdivisions			177,944				-				30,332				147,612
Mortgage-backed securities			140,597				29				4,698				135,928
Corporate debt securities			6,508				-				722				5,786
Total securities available for sale		$	665,244			$	29			$	69,020			$	596,253

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

Investments Classified by Contractual Maturity Date [Table Text Block]

March 31, 2025		Amortized Cost				Fair Value
Available for Sale:
Due in one year or less		$	28,966			$	28,715
Due after one year through five years			220,924				208,049
Due after five years through ten years			233,126				199,321
Due after ten years			182,228				160,168
Total securities available for sale		$	665,244			$	596,253

Gain (Loss) on Securities [Table Text Block]

March 31, 2025		Less Than 12 Months								12 Months or More
		Fair Value				Gross Unrealized Losses				Fair Value				Gross Unrealized Losses
U.S. government agencies and corporations		$	-			$	-			$	306,927			$	33,268
State and political subdivisions			-				-				147,612				30,332
Mortgage-backed securities			1,386				18				109,515				4,680
Corporate debt securities			-				-				5,786				722
Total temporarily impaired securities		$	1,386			$	18			$	569,840			$	69,002

December 31, 2024		Less Than 12 Months								12 Months or More
		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

X

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Tabular disclosure of 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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