Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

			Gross		Gross
	Amortized		unrealized		unrealized			Fair
(dollars in thousands)	cost		gains		losses			value
December 31, 2023
Held-to-maturity securities:
Agency - GSE	$	81,382	$	-	$	(7,561	)	$	73,821
Obligations of states and political subdivisions		142,851		-		(19,496	)		123,355
Total held-to-maturity securities	$	224,233	$	-	$	(27,057	)	$	197,176
Available-for-sale debt securities:
Agency - GSE	$	31,178	$	-	$	(3,633	)	$	27,545
Obligations of states and political subdivisions		138,217		1		(15,421	)		122,797
MBS - GSE residential		226,240		-		(32,542	)		193,698
Total available-for-sale debt securities	$	395,635	$	1	$	(51,596	)	$	344,040

			Gross		Gross
	Amortized		unrealized		unrealized			Fair
(dollars in thousands)	cost		gains		losses			value
December 31, 2022
Held-to-maturity securities:
Agency - GSE	$	80,306	$	-	$	(9,243	)	$	71,063
Obligations of states and political subdivisions		142,438		-		(26,221	)		116,217
Total held-to-maturity securities	$	222,744	$	-	$	(35,464	)	$	187,280
Available-for-sale debt securities:
Agency - GSE	$	36,076	$	-	$	(4,543	)	$	31,533
Obligations of states and political subdivisions		197,935		501		(26,542	)		171,894
MBS - GSE residential		254,730		-		(37,295	)		217,435
Total available-for-sale debt securities	$	488,741	$	501	$	(68,380	)	$	420,862

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized		Fair
(dollars in thousands)	cost		value
Held-to-maturity securities:
Due in one year or less	$	-	$	-
Due after one year through five years		24,517		22,985
Due after five years through ten years		75,811		67,550
Due after ten years		123,905		106,641
Total held-to-maturity securities	$	224,233	$	197,176
Available-for-sale securities:
Debt securities:
Due in one year or less	$	750	$	751
Due after one year through five years		26,607		24,238
Due after five years through ten years		30,766		26,343
Due after ten years		110,191		99,010
MBS - GSE residential		226,240		193,698
Total available-for-sale debt securities	$	394,554	$	344,040

Schedule of Realized Gain (Loss) [Table Text Block]

	December 31,
(dollars in thousands)	2023			2022
Gross realized gain	$	533		$	18
Gross realized loss		(7,001	)		(14	)
Net gain	$	(6,468	)	$	4

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

	Less than 12 months					More than 12 months					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(dollars in thousands)	value		losses			value		losses			value		losses
December 31, 2023
Agency - GSE	$	-	$	-		$	101,366	$	(11,194	)	$	101,366	$	(11,194	)
Obligations of states and political subdivisions		781		(22	)		244,224		(33,814	)		245,005		(33,836	)
MBS - GSE residential		-		-			193,698		(31,462	)		193,698		(31,462	)
Total	$	781	$	(22	)	$	539,288	$	(76,470	)	$	540,069	$	(76,492	)
Number of securities		2					414					416
December 31, 2022
Agency - GSE	$	9,285	$	(377	)	$	93,312	$	(13,409	)	$	102,597	$	(13,786	)
Obligations of states and political subdivisions		170,484		(26,928	)		112,353		(25,835	)		282,837		(52,763	)
MBS - GSE residential		61,803		(6,018	)		155,632		(31,277	)		217,435		(37,295	)
Total	$	241,572	$	(33,323	)	$	361,297	$	(70,521	)	$	602,869	$	(103,844	)
Number of securities		272					213					485