Note 3 - Securities (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Available-for-sale Securities [Table Text Block]

	(Dollars in thousands)
			Gross		Gross			Estimated
	Cost		Unrealized		Unrealized			Fair
	Basis		Gains		Losses			Value
December 31, 2020
Money market fund	$	52,941	$	-	$	-		$	52,941
U.S. government sponsored entities		7,881		3		(24	)		7,860
Collateralized mortgage obligations and residential mortgage-backed securities		151,355		3,417		(36	)		154,736
Municipal securities		183,103		11,102		(2	)		194,203
Collateralized debt obligations		2,182		-		(1,253	)		929
Total securities available-for-sale	$	397,462	$	14,522	$	(1,315	)	$	410,669

	(Dollars in thousands)
			Gross		Gross			Estimated
	Cost		Unrealized		Unrealized			Fair
	Basis		Gains		Losses			Value
December 31, 2019
Money market fund	$	9,670	$	-	$	-		$	9,670
U.S. government sponsored entities		12,994		64		-			13,058
Collateralized mortgage obligations and residential mortgage-backed securities		149,339		1,745		(96	)		150,988
Municipal securities		97,628		4,844		(45	)		102,427
Collateralized debt obligations		2,202		-		(1,126	)		1,076
Total securities available-for-sale	$	271,833	$	6,653	$	(1,267	)	$	277,219

Investments Classified by Contractual Maturity Date [Table Text Block]

	(Dollars in thousands)
	Available-for-sale
	Estimated
	Fair		Tax-Equivalent
December 31, 2020	Value		Yield (%)
Due in one year or less	$	52,941		0.03
Due from one to five years		3,779		4.20
Due from five to ten years		23,344		2.67
Due over ten years		175,869		3.37
Collateralized mortgage obligations and residential mortgage-backed securities		154,736		1.87
Total	$	410,669		2.34

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

	(Dollars in thousands)
	December 31,			December 31,
	2020			2019
Proceeds	$	51,350		$	37,939
Gross gains		2,407			888
Gross losses		(59	)		(267	)

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	(Dollars in thousands)
	Unrealized gain/(loss)
Ending balance, December 31, 2019	$	4,261
Current period change		6,180
Ending balance, December 31, 2020	$	10,441

Unrealized Gain (Loss) on Investments [Table Text Block]

	(Dollars in thousands)
	Less than 12 months					12 months or longer					Total
	Estimated					Estimated					Estimated
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
December 31, 2020
U.S. government sponsored entities	$	4,975	$	(24	)	$	-	$	-		$	4,975	$	(24	)
Collateralized mortgage obligations and residential mortgage-backed securities		11,953		(36	)		-		-			11,953		(36	)
Municipal securities		1,864		(2	)		-		-			1,864		(2	)
Collateralized debt obligations		-		-			929		(1,253	)		929		(1,253	)
Total temporarily impaired	$	18,792	$	(62	)	$	929	$	(1,253	)	$	19,721	$	(1,315	)
Number of securities				8					2					10

	(Dollars in thousands)
	Less than 12 months					12 months or longer					Total
	Estimated					Estimated					Estimated
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
December 31, 2018
U.S. government sponsored entities	$	-	$	-		$	-	$	-		$	-	$	-
Collateralized mortgage obligations and residential mortgage-backed securities		8,859		(31	)		15,065		(65	)		23,924		(96	)
Municipal securities		4,367		(45	)		-		-			4,367		(45	)
Collateralized debt obligations		-		-			1,076		(1,126	)		1,076		(1,126	)
Total temporarily impaired	$	13,226	$	(76	)	$	16,141	$	(1,191	)	$	29,367	$	(1,267	)
Number of securities				11					17					28