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Note 4 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

(in thousands)		Amortized				Unrealized
December 31, 2022		cost				Gains				Losses					Fair value
U.S. Treasury and other U.S. Government obligations		$	122,966			$	-			$	(7,927	)		$	115,039
Government sponsored enterprise obligations			149,773				290				(6,437	)			143,626
Mortgage backed securities - government agencies			874,265				58				(121,585	)			752,738
Obligations of states and political subdivisions			145,016				1				(17,418	)			127,599
Other			5,957				-				(342	)			5,615
Total available for sale debt securities		$	1,297,977			$	349			$	(153,709	)		$	1,144,617
December 31, 2021
U.S. Treasury and other U.S. Government obligations		$	123,753			$	-			$	(1,252	)		$	122,501
Government sponsored enterprise obligations			132,760				2,497				(236	)			135,021
Mortgage backed securities - government agencies			857,283				2,495				(13,154	)			846,624
Obligations of states and political subdivisions			75,488				289				(702	)			75,075
Other			1,095				-				(18	)			1,077
Total available for sale debt securities		$	1,190,379			$	5,281			$	(15,362	)		$	1,180,298

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

(in thousands)		Carrying				Unrecognized
December 31, 2022		value				Gains				Losses					Fair value
U.S. Treasury and other U.S. Government obligations		$	217,794			$	-			$	(9,166	)		$	208,628
Government sponsored enterprise obligations			27,507				-				(2,559	)			24,948
Mortgage backed securities - government agencies			227,916				-				(29,659	)			198,257
Total available for sale debt securities		$	473,217			$	-			$	(41,384	)		$	431,833

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		$	38,868			$	38,329			$	15,029			$	14,796
Due after one year but within five years			154,801				145,075				203,384				194,412
Due after five years but within 10 years			68,137				60,473				26,278				23,767
Due after 10 years			161,906				148,002				610				601
Mortgage backed securities - government agencies			874,265				752,738				227,916				198,257
Total available for sale debt securities		$	1,297,977			$	1,144,617			$	473,217			$	431,833

Schedule of Unrealized Loss on Investments [Table Text Block]

		AFS Debt Securities
		Less than 12 months								12 months or more								Total
(in thousands)		Fair				Unrealized				Fair				Unrealized				Fair				Unrealized
December 31, 2022		value				losses				value				losses				value				losses
U.S. Treasury and other U.S. Government obligations		$	3,025			$	(57	)		$	111,966			$	(7,870	)		$	114,991			$	(7,927	)
Government sponsored enterprise obligations			99,785				(3,553	)			22,484				(2,884	)			122,269				(6,437	)
Mortgage-backed securities - government agencies			180,263				(11,114	)			567,988				(110,471	)			748,251				(121,585	)
Obligations of states and political subdivisions			64,165				(3,763	)			56,864				(13,655	)			121,029				(17,418	)
Other			4,865				(213	)			749				(129	)			5,614				(342	)
Total AFS debt securities		$	352,103			$	(18,700	)		$	760,051			$	(135,009	)		$	1,112,154			$	(153,709	)
December 31, 2021
U.S. Treasury and other U.S. Government obligations		$	122,501			$	(1,252	)		$	-			$	-			$	122,501			$	(1,252	)
Government sponsored enterprise obligations			23,789				(223	)			447				(13	)			24,236				(236	)
Mortgage-backed securities - government agencies			615,130				(10,027	)			102,637				(3,127	)			717,767				(13,154	)
Obligations of states and political subdivisions			46,493				(686	)			484				(16	)			46,977				(702	)
Other			957				(18	)			-				-				957				(18	)
Total AFS debt securities		$	808,870			$	(12,206	)		$	103,568			$	(3,156	)		$	912,438			$	(15,362	)

		HTM Debt Securities
		Less than 12 months								12 months or more								Total
(in thousands)		Fair				Unrecognized				Fair				Unrecognized				Fair				Unrecognized
December 31, 2022		value				losses				value				losses				value				losses
U.S. Treasury and other U.S. Government obligations		$	208,628			$	(9,166	)		$	-			$	-			$	208,628			$	(9,166	)
Government sponsored enterprise obligations			24,948				(2,559	)			-				-				24,948				(2,559	)
Mortgage-backed securities - government agencies			198,257				(29,659	)			-				-				198,257				(29,659	)
Total HTM debt securities		$	431,833			$	(41,384	)		$	-			$	-			$	431,833			$	(41,384	)

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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