Note 3 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Marketable Securities [Table Text Block]

(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
December 31, 2019
State, county and municipal securities	$	5,133	$	36	$	(54)	$	5,115
Corporate debt securities		2,811		11		(16)		2,806
Mortgage-backed securities		338,930		2,669		(2,188)		339,411
Total debt securities	$	346,874	$	2,716	$	(2,258)	$	347,332

(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
December 31, 2018
State, county and municipal securities	$	4,008	$	18	$	(37)	$	3,989
Corporate debt securities		2,927		-		(55)		2,872
Mortgage-backed securities		356,498		303		(10,596)		346,205
Total debt securities	$	363,433	$	321	$	(10,688)	$	353,066

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than 12 Months				12 Months or More				Total
(dollars in thousands)	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
December 31, 2019
State, county and municipal securities		3,257		(54)		-		-		3,257		(54)
Corporate debt securities		-		-		784		(16)		784		(16)
Mortgage-backed securities		60,860		(277)		119,110		(1,911)		179,970		(2,188)
Total debt securities	$	64,117	$	(331)	$	119,894	$	(1,927)	$	184,011	$	(2,258)
December 31, 2018
State, county and municipal securities		612		(3)		1,882		(34)		2,494		(37)
Corporate debt securities		2,009		(21)		863		(34)		2,872		(55)
Mortgage-backed securities		39,083		(504)		255,747		(10,092)		294,830		(10,596)
Total debt securities	$	41,704	$	(528)	$	258,492	$	(10,160)	$	300,196	$	(10,688)

Investments Classified by Contractual Maturity Date [Table Text Block]

	Securities
	Available for Sale
(dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	150	$	150
Due after one year through five years		3,195		3,215
Due after five years through ten years		723		744
Due after ten years		3,876		3,812
	$	7,944	$	7,921
Mortgage-backed securities		338,930		339,411
	$	346,874	$	347,332