Note 7 - Securities Available for Sale (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than Twelve Months							Twelve Months or More							Total
(Dollars in thousands)	# of Investments		Fair Value		Unrealized Losses			# of Investments		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
September 30, 2021
Mortgage backed securities:
Federal National Mortgage  Association (FNMA)		16	$	72,635		(612	)		1	$	3,694		(51	)	$	76,329		(663	)
Federal Home Loan Mortgage Corporation (FHLMC)		16		73,242		(517	)		0		0		0			73,242		(517	)
Other marketable securities:
U.S. Government agency obligations		7		34,911		(85	)		0		0		0			34,911		(85	)
Corporate preferred stock		0		0		0			1		644		(56	)		644		(56	)
Total temporarily impaired securities		39	$	180,788		(1,214	)		2	$	4,338		(107	)	$	185,126		(1,321	)

	Less Than Twelve Months							Twelve Months or More							Total
(Dollars in thousands)	# of Investments		Fair Value		Unrealized Losses			# of Investments		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2020
Mortgage backed securities:
FNMA		1	$	4,956		(3	)		0	$	0		0		$	4,956		(3	)
Other marketable securities:
Corporate preferred stock		0		0		0			1		630		(70	)		630		(70	)
Total temporarily impaired securities		1	$	4,956		(3	)		1	$	630		(70	)	$	5,586		(73	)

Debt Securities, Available-for-sale [Table Text Block]

(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2021:
Mortgage-backed securities:
FNMA	$	111,267		751		(663	)		111,355
FHLMC		83,244		172		(517	)		82,899
Collateralized mortgage obligations:
FNMA		51		2		0			53
		194,562		925		(1,180	)		194,307
Other marketable securities:
U.S. Government agency obligations		39,990		83		(85	)		39,988
Corporate preferred stock		700		0		(56	)		644
		40,690		83		(141	)		40,632
	$	235,252		1,008		(1,321	)		234,939

(Dollars in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
December 31, 2020
Mortgage-backed securities:
FNMA	$	68,699		1,313		(3	)		70,009
FHLMC		31,025		327		0			31,352
Collateralized mortgage obligations:
FNMA		97		6		0			103
		99,821		1,646		(3	)		101,464
Other marketable securities:
U.S. Government agency obligations		45,029		204		0			45,233
Municipal obligations		725		1		0			726
Corporate obligations		37		0		0			37
Corporate preferred stock		700		0		(70	)		630
		46,491		205		(70	)		46,626
	$	146,312		1,851		(73	)		148,090

Available-for-sale Securities [Member]

Notes Tables

Contractual Obligation, Fiscal Year Maturity [Table Text Block]

(Dollars in thousands)	Amortized Cost		Fair Value
Due less than one year	$	85,676		85,595
Due after one year through five years		124,263		124,119
Due after five years through ten years		24,576		24,544
Due after ten years		737		681
Total	$	235,252		234,939