Note 2 - Investment Securities (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

(in thousands)	Amortized		Unrealized
March 31, 2025	cost		Gains		Losses			Fair value
U.S. Treasury and other U.S. Government obligations	$	247,835	$	-	$	(14	)	$	247,821
Government sponsored enterprise obligations		86,596		111		(3,810	)		82,897
Mortgage backed securities - government agencies		677,301		24		(89,358	)		587,967
Obligations of states and political subdivisions		126,185		2		(13,185	)		113,002
Other		2,654		-		(102	)		2,552
Total available for sale debt securities	$	1,140,571	$	137	$	(106,469	)	$	1,034,239
December 31, 2024
U.S. Treasury and other U.S. Government obligations	$	198,182	$	33	$	-		$	198,215
Government sponsored enterprise obligations		88,895		110		(4,847	)		84,158
Mortgage backed securities - government agencies		696,767		-		(105,790	)		590,977
Obligations of states and political subdivisions		128,431		1		(14,198	)		114,234
Other		2,686		-		(156	)		2,530
Total available for sale debt securities	$	1,114,961	$	144	$	(124,991	)	$	990,114

Debt Securities, Held-to-Maturity [Table Text Block]

(in thousands)	Carrying		Unrecognized
March 31, 2025	value		Gains		Losses			Fair value
U.S. Treasury and other U.S. Government obligations	$	1,981	$	-	$	(50	)	$	1,931
Government sponsored enterprise obligations		23,467		-		(1,600	)		21,867
Mortgage backed securities - government agencies		187,003		3		(21,787	)		165,219
Total held to maturity debt securities	$	212,451	$	3	$	(23,437	)	$	189,017
December 31, 2024
U.S. Treasury and other U.S. Government obligations	$	153,850	$	-	$	(741	)	$	153,109
Government sponsored enterprise obligations		25,395		-		(2,034	)		23,361
Mortgage backed securities - government agencies		190,926		2		(26,041	)		164,887
Total held to maturity debt securities	$	370,171	$	2	$	(28,816	)	$	341,357

Investments Classified by Contractual Maturity Date [Table Text Block]

	AFS Debt Securities				HTM Debt Securities
(in thousands)	Amortized cost		Fair value		Carrying value		Fair value
Due within one year	$	255,139	$	255,083	$	14	$	14
Due after one year but within five years		32,719		31,413		2,631		2,568
Due after five years but within 10 years		95,161		83,672		22,338		20,765
Due after 10 years		80,251		76,104		465		451
Mortgage backed securities - government agencies		677,301		587,967		187,003		165,219
Total	$	1,140,571	$	1,034,239	$	212,451	$	189,017

Schedule of Unrealized Losses on Securities [Table Text Block]

	AFS Debt Securities
	Less than 12 months					12 months or more					Total
(in thousands)	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
March 31, 2025	value		losses			value		losses			value		losses
U.S. Treasury and other U.S. Government obligations	$	247,821	$	(14	)	$	-	$	-		$	247,821	$	(14	)
Government sponsored enterprise obligations		5,713		(48	)		72,185		(3,786	)		77,898		(3,834	)
Mortgage-backed securities - government agencies		18,016		(212	)		564,784		(89,122	)		582,800		(89,334	)
Obligations of states and political subdivisions		9,907		(143	)		97,798		(13,042	)		107,705		(13,185	)
Other		-		-			2,552		(102	)		2,552		(102	)
Total AFS debt securities	$	281,457	$	(417	)	$	737,319	$	(106,052	)	$	1,018,776	$	(106,469	)
December 31, 2024
Government sponsored enterprise obligations	$	5,801	$	(49	)	$	74,478	$	(4,798	)	$	80,279	$	(4,847	)
Mortgage-backed securities - government agencies		23,159		(579	)		567,818		(105,211	)		590,977		(105,790	)
Obligations of states and political subdivisions		9,181		(164	)		101,407		(14,034	)		110,588		(14,198	)
Other		-		-			2,530		(156	)		2,530		(156	)
Total AFS debt securities	$	38,141	$	(792	)	$	746,233	$	(124,199	)	$	784,374	$	(124,991	)

	HTM Debt Securities
	Less than 12 months					12 months or more					Total
(in thousands)	Fair		Unrecognized			Fair		Unrecognized			Fair		Unrecognized
March 31, 2025	value		losses			value		losses			value		losses
U.S. Treasury and other U.S. Government obligations	$	-	$	-		$	1,931	$	(50	)	$	1,931	$	(50	)
Government sponsored enterprise obligations		388		(6	)		21,479		(1,594	)		21,867		(1,600	)
Mortgage-backed securities - government agencies		151		(1	)		164,739		(21,786	)		164,890		(21,787	)
Total HTM debt securities	$	539	$	(7	)	$	188,149	$	(23,430	)	$	188,688	$	(23,437	)
December 31, 2024
U.S. Treasury and other U.S. Government obligations	$	-	$	-		$	153,109	$	(741	)	$	153,109	$	(741	)
Government sponsored enterprise obligations		396		(6	)		22,965		(2,028	)		23,361		(2,034	)
Mortgage-backed securities - government agencies		-		-			164,724		(26,041	)		164,724		(26,041	)
Total HTM debt securities	$	396	$	(6	)	$	340,798	$	(28,810	)	$	341,194	$	(28,816	)