Note 3 - Investment Securities Available for Sale (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

Available-for-Sale	September 30, 2024
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Debt securities:
U.S. Treasury securities	$	3,998	$	-	$	(7	)	$	3,991
U.S. Government-sponsored agencies collateralized by mortgage obligations - residential		243,643		2,287		(10,244	)		235,686
U.S. Government-agencies collateralized by mortgage obligations - commercial		134,642		1,609		(8,867	)		127,384
Obligations of states and political subdivisions		95,330		1,137		(6,808	)		89,659
	$	477,613	$	5,033	$	(25,926	)	$	456,720

Available-for-Sale	December 31, 2023
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Debt securities:
U.S. Treasury securities	$	6,978	$	-	$	(98	)	$	6,880
U.S. Government-sponsored agencies collateralized by mortgage obligations - residential		256,694		351		(21,114	)		235,931
U.S. Government-agencies collateralized by mortgage obligations - commercial		129,321		465		(13,834	)		115,952
Obligations of states and political subdivisions		142,276		1,067		(12,925	)		130,418
	$	535,269	$	1,883	$	(47,971	)	$	489,181

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

September 30, 2024	Less than 12 Months				12 Months or More				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
Debt securities:
U.S. Treasury securities	$	-	$	-	$	3,991	$	7	$	3,991	$	7
U.S. Government-sponsored agencies collateralized by mortgage obligations - residential		4,357		2		101,187		10,242		105,544		10,244
U.S. Government-agencies collateralized by mortgage obligations - commercial		9,310		106		60,454		8,761		69,764		8,867
Obligations of states and political subdivisions		1,941		11		50,544		6,797		52,485		6,808
	$	15,608	$	119	$	216,176	$	25,807	$	231,784	$	25,926

December 31, 2023	Less than 12 Months				12 Months or More				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
Debt securities:
U.S. Treasury securities	$	-	$	-	$	6,880	$	98	$	6,880	$	98
U.S. Government-sponsored agencies collateralized by mortgage obligations - residential		43,924		279		160,383		20,835		204,307		21,114
U.S. Government-agencies collateralized by mortgage obligations - commercial		16,533		295		71,782		13,539		88,315		13,834
Obligations of states and political subdivisions		9,306		151		82,764		12,774		92,070		12,925
	$	69,763	$	725	$	321,809	$	47,246	$	391,572	$	47,971

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized Cost		Estimated Fair Value
Within one year	$	4,818	$	4,809
After one year through five years		5,793		5,824
After five years through ten years		17,544		17,765
After ten years		71,173		65,252
Investment securities not due at a single maturity date:
Government- agencies commercial mortgage-backed securities		134,642		127,384
Government-sponsored agencies residential mortgage-backed securities		243,643		235,686
	$	477,613	$	456,720