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Note 4 - Available-for-sale Securities (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

(In thousands)		Amortized Cost				Gross Unrealized Gains				Gross Unrealized (Losses)				Fair Value
December 31, 2018:
U. S. Government agency mortgage-backed securities		$	20,626				43				(196	)			20,473
Corporate bonds			14,000				-				(1,026	)			12,974
Subordinated notes			4,500				64				-				4,564
U.S. Treasury notes			1,484				1				-				1,485
		$	40,610				108				(1,222	)			39,496

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

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, 2018:
U. S. Government agency mortgage-backed securities		$	8,024				(38	)			5,422				(158	)			13,446				(196	)
Corporate bonds			-				-				12,974				(1,026	)			12,974				(1,026	)
		$	8,024				(38	)			18,396				(1,184	)			26,420				(1,222	)

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	)

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, 2018:
Corporate bonds		$	-				9,000				5,000				14,000				-				8,537				4,437				12,974
Subordinated notes			-				4,500				-				4,500				-				4,564				-				4,564
U.S. Treasury notes			1,484				-				-				1,484				1,485				-				-				1,485
Available-for-sale securities with single maturity dates			1,484				13,500				5,000				19,984				1,485				13,101				4,437				19,023
U. S. Government agency mortgage-backed securities			6,842				5,668				8,116				20,626				6,844				5,530				8,099				20,473
		$	8,326				19,168				13,116				40,610				8,329				18,631				12,536				39,496

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