Note 3 - Available for Sale Debt Securities (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

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

(in thousands)	Amortized		Unrealized
September 30, 2021	cost		Gains		Losses			Fair value
U.S. Treasury and other U.S. Government obligations	$	83,916	$	-	$	(204	)	$	83,712
Government sponsored enterprise obligations		142,802		3,553		(68	)		146,287
Mortgage backed securities - government agencies		777,636		3,784		(9,698	)		771,722
Obligations of states and political subdivisions		67,633		284		(493	)		67,424
Other		1,006		-		(3	)		1,003
Total available for sale debt securities	$	1,072,993	$	7,621	$	(10,466	)	$	1,070,148
December 31, 2020
Government sponsored enterprise obligations	$	133,436	$	5,003	$	(361	)	$	138,078
Mortgage backed securities - government agencies		430,198		7,555		(168	)		437,585
Obligations of states and political subdivisions		11,088		227		-			11,315
Total available for sale debt securities	$	574,722	$	12,785	$	(529	)	$	586,978

Investments Classified by Contractual Maturity Date [Table Text Block]

(in thousands)	Amortized cost		Fair value
Due within one year	$	30,408	$	30,442
Due after one year but within five years		100,808		100,774
Due after five years but within 10 years		28,165		28,220
Due after 10 years		135,976		138,990
Mortgage backed securities - government agencies		777,636		771,722
Total available for sale debt securities	$	1,072,993	$	1,070,148

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less than 12 months					12 months or more					Total
(in thousands)	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
September 30, 2021	value		losses			value		losses			value		losses
U.S. Treasury and other U.S.Government obligations	$	83,712	$	(204	)	$	-	$	-		$	83,712	$	(204	)
Government sponsored enterprise obligations		16,587		(68	)		-		-			16,587		(68	)
Mortgage-backed securities - government agencies		585,126		(9,698	)		-		-			585,126		(9,698	)
Obligations of states and political subdivisions		37,348		(493	)		-		-			37,348		(493	)
Other securities		1,003		(3	)		-		-			1,003		(3	)
Total	$	723,776	$	(10,466	)	$	-	$	-		$	723,776	$	(10,466	)
December 31, 2020
Government sponsored enterprise obligations	$	10,404	$	(112	)	$	24,398	$	(249	)	$	34,802	$	(361	)
Mortgage-backed securities - government agencies		68,033		(167	)		921		(1	)		68,954		(168	)
Total	$	78,437	$	(279	)	$	25,319	$	(250	)	$	103,756	$	(529	)