Note 3 - Available for Sale Debt Securities (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

(in thousands)			Unrealized					Allowance
March 31, 2020	Amortized cost		Gains		Losses			for Credit Losses		Fair value
Government sponsored enterprise obligations	$	203,401	$	2,647	$	(125	)	$	—	$	205,923
Mortgage backed securities - government agencies		219,811		6,766		(5	)		—		226,572
Obligations of states and political subdivisions		13,234		84		—			—		13,318
Total available for sale debt securities	$	436,446	$	9,497	$	(130	)	$	—	$	445,813
December 31, 2019
U.S. Treasury and other U.S. Government Obligations	$	49,887	$	10	$	—		$	—	$	49,897
Government sponsored enterprise obligations		208,933		1,189		(178	)		—		209,944
Mortgage backed securities - government agencies		193,574		1,243		(956	)		—		193,861
Obligations of states and political subdivisions		16,919		117		—			—		17,036
Total available for sale debt securities	$	469,313	$	2,559	$	(1,134	)	$	—	$	470,738

Investments Classified by Contractual Maturity Date [Table Text Block]

(in thousands)	Amortized cost		Fair value
Due within 1 year	$	76,966	$	77,108
Due after 1 year but within 5 years		31,054		31,618
Due after 5 years but within 10 years		5,482		5,583
Due after 10 years		103,133		104,932
Mortgage backed securities - government agencies		219,811		226,572
Total securities available for sale	$	436,446	$	445,813

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
March 31, 2020	value		losses			value		losses			value		losses
Government sponsored enterprise obligations	$	26,339	$	(92	)	$	1,480	$	(33	)	$	27,819	$	(125	)
Mortgage-backed securities - government agencies		1,033		(5	)		—		—			1,033		(5	)
Total temporarily impaired securities	$	27,372	$	(97	)	$	1,480	$	(33	)	$	28,852	$	(130	)
December 31, 2019
Government sponsored enterprise obligations	$	16,503	$	(107	)	$	11,492	$	(71	)	$	27,995	$	(178	)
Mortgage-backed securities - government agencies		81,664		(496	)		32,453		(460	)		114,117		(956	)
Total temporarily impaired securities	$	98,167	$	(603	)	$	43,945	$	(531	)	$	142,112	$	(1,134	)