Note 3 - Securities (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

	As of June 30, 2021
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Costs		Gains		Losses			Fair Values
Available-for-sale securities:
U.S. government & agencies	$	28,903	$	822	$	(34	)	$	29,691
Obligations of state and political subdivisions		132,675		4,366		(574	)		136,467
Residential mortgage-backed securities and collateralized mortgage obligations		317,157		2,697		(2,012	)		317,842
Commercial mortgage-backed securities		52,484		532		(298	)		52,718
Other asset-backed securities		42,143		804		(1	)		42,946
Total	$	573,362	$	9,221	$	(2,919	)	$	579,664

	As of December 31, 2020
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(Amounts in thousands)	Costs		Gains		Losses			Fair Values
Available-for-sale securities:
U.S. government & agencies	$	32,164	$	838	$	(8	)	$	32,994
Obligations of state and political subdivisions		103,424		4,971		(29	)		108,366
Residential mortgage-backed securities and collateralized mortgage obligations		236,829		3,895		(246	)		240,478
Commercial mortgage-backed securities		27,455		637		(18	)		28,074
Other asset-backed securities		36,377		592		(1	)		36,968
Total	$	436,249	$	10,933	$	(302	)	$	446,880

Amortized Cost and Estimated Fair Value Available for Sale Securities [Table Text Block]

	Available-For-Sale
(Amounts in thousands)	Amortized Costs		Estimated Fair Values
Amounts maturing in:
One year or less	$	12,527	$	12,780
After one year through five years		109,467		111,792
After five years through ten years		222,288		222,274
After ten years		229,080		232,818
Total	$	573,362	$	579,664

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

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
(Amounts in thousands)	2021			2020			2021			2020
Investment Securities:
Proceeds from sales of investment securities	$	27,176		$	20,422		$	39,066		$	49,761
Gross realized gains on sales of investment securities:
Obligations of state and political subdivisions	$	227		$	43		$	227		$	91
Residential mortgage-backed securities and collateralized mortgage obligations		81			143			135			226
Commercial mortgage-backed securities		—			1			—			38
Other asset-backed securities		7			—			7			—
Total gross realized gains on sales of investment securities		315			187			369			355
Gross realized losses on sales of investment securities:
U.S. government & agencies		—			(14	)		—			(14	)
Obligations of state and political subdivisions		—			(1	)		—			(5	)
Residential mortgage-backed securities and collateralized mortgage obligations		(231	)		(32	)		(278	)		(112	)
Commercial mortgage-backed securities		(20	)		—			(20	)		—
Total gross realized losses on sales of investment securities		(251	)		(47	)		(298	)		(131	)
Gain on sale of investment securities, net	$	64		$	140		$	71		$	224

Schedule of Unrealized Loss on Investments [Table Text Block]

	As of June 30, 2021
	Less Than 12 Months					12 Months or More					Total
	Estimated					Estimated					Estimated
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Amounts in thousands)	Values		Losses			Values		Losses			Values		Losses
Available-for-sale securities:
U.S. government & agencies	$	2,920	$	(32	)	$	286	$	(2	)	$	3,206	$	(34	)
Obligations of state and political subdivisions		36,685		(574	)		—		—			36,685		(574	)
Residential mortgage-backed securities and collateralized mortgage obligations		185,745		(2,007	)		283		(5	)		186,028		(2,012	)
Commercial mortgage-backed securities		25,891		(298	)		—		—			25,891		(298	)
Other asset-backed securities		1,787		(1	)		—		—			1,787		(1	)
Total temporarily impaired securities	$	253,028	$	(2,912	)	$	569	$	(7	)	$	253,597	$	(2,919	)

	As of December 31, 2020
	Less Than 12 Months					12 Months or More					Total
	Estimated					Estimated					Estimated
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Amounts in thousands)	Values		Losses			Values		Losses			Values		Losses
Available-for-sale securities:
U.S. government & agencies	$	—	$	—		$	1,615	$	(8	)	$	1,615	$	(8	)
Obligations of state and political subdivisions		7,291		(29	)		—		—			7,291		(29	)
Residential mortgage-backed securities and collateralized mortgage obligations		68,512		(241	)		249		(5	)		68,761		(246	)
Commercial mortgage-backed securities		5,400		(18	)		—		—			5,400		(18	)
Other asset-backed securities		2,106		—			930		(1	)		3,036		(1	)
Total temporarily impaired securities	$	83,309	$	(288	)	$	2,794	$	(14	)	$	86,103	$	(302	)