Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2022

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, 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

			Gross		Gross
	Amortized		unrealized		unrealized			Fair
(dollars in thousands)	cost		gains		losses			value
December 31, 2021
Available-for-sale debt securities:
Agency - GSE	$	119,399	$	204	$	(2,600	)	$	117,003
Obligations of states and political subdivisions		360,680		6,708		(2,678	)		364,710
MBS - GSE residential		258,674		1,654		(3,061	)		257,267
Total available-for-sale debt securities	$	738,753	$	8,566	$	(8,339	)	$	738,980

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		7,022		6,470
Due after five years through ten years		76,864		67,709
Due after ten years		138,858		113,101
Total held-to-maturity securities	$	222,744	$	187,280
Available-for-sale securities:
Debt securities:
Due in one year or less	$	3,997	$	3,951
Due after one year through five years		18,791		16,974
Due after five years through ten years		42,692		35,451
Due after ten years		168,531		147,051
MBS - GSE residential		254,730		217,435
Total available-for-sale debt securities	$	488,741	$	420,862

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

	December 31,
(dollars in thousands)	2022			2021			2020
Gross realized gain	$	18		$	98		$	147
Gross realized loss		(14	)		(52	)		(32	)
Net gain	$	4		$	46		$	115

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, 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
December 31, 2021
Agency - GSE	$	84,308	$	(1,460	)	$	26,516	$	(1,140	)	$	110,824	$	(2,600	)
Obligations of states and political subdivisions		193,124		(2,662	)		12,796		(399	)		205,920		(3,061	)
MBS - GSE residential		137,495		(2,351	)		9,469		(327	)		146,964		(2,678	)
Total	$	414,927	$	(6,473	)	$	48,781	$	(1,866	)	$	463,708	$	(8,339	)
Number of securities		187					26					213