Note 3 - Available-for-sale Securities (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Available-for-sale Securities [Table Text Block]

(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value
December 31, 2017:
U. S. Government agency mortgage-backed securities	$	7,330		-		(106	)		7,224
Corporate bonds		14,000		-		(196	)		13,804
Subordinated notes		4,500		48		-			4,548
	$	25,830		48		(302	)		25,576
December 31, 2016:
U. S. Government agency mortgage-backed securities	$	10,624		9		(192	)		10,441
Corporate bonds		9,000		-		(39	)		8,961
Subordinated notes		5,000		26		-			5,026
	$	24,624		35		(231	)		24,428

Schedule of Unrealized Loss on Investments [Table Text Block]

(In thousands)	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized (Loss)			Fair Value		Unrealized (Loss)			Fair Value		Unrealized (Loss)
December 31, 2017:
U. S. Government agency mortgage-backed securities	$	4,118		(13	)		3,106		(93	)		7,224		(106	)
Corporate bonds		13,804		(196	)		-		-			13,804		(196	)
	$	17,922		(209	)		3,106		(93	)		21,028		(302	)
December 31, 2016:
U. S. Government agency mortgage-backed securities	$	5,969		(144	)		3,356		(48	)		9,325		(192	)
Corporate bonds		-		-			5,961		(39	)		5,961		(39	)
	$	5,969		(144	)		9,317		(87	)		15,286		(231	)

Investments Classified by Contractual Maturity Date [Table Text Block]

(In thousands)	Amortized Cost								Fair Value
	Due Within 5 years		Due After 5 years through 10 years		Due After 10 years		Total		Due Within 5 years		Due After 5 years through 10 years		Due After 10 years		Total
December 31, 2017:
Corporate bonds	$	-		9,000		5,000		14,000		-		8,928		4,876		13,804
Subordinated Notes		-		4,500		-		4,500		-		4,548		-		4,548
Available-for-sale securities with single maturity dates		-		13,500		5,000		18,500		-		13,476		4,876		18,352
U. S. Government agency mortgage-backed securities		-		3,200		4,130		7,330		-		3,107		4,117		7,224
	$	-		16,700		9,130		25,830		-		16,583		8,993		25,576
December 31, 2016:
Corporate bonds	$	9,000		-		-		9,000		8,961		-		-		8,961
Subordinated Notes		1,000		4,000		-		5,000		1,026		4,000		-		5,026
Available-for-sale securities with single maturity dates		10,000		4,000		-		14,000		9,987		4,000		-		13,987
U. S. Government agency mortgage-backed securities		-		2,132		8,492		10,624		-		2,106		8,335		10,441
	$	10,000		6,132		8,492		24,624		9,987		6,106		8,335		24,428