Note 3 - Securities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Available-for-sale Securities [Table Text Block]

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
2019
U.S. Government agency debt obligations	$	185,103,000	$	2,449,000	$	(1,142,000	)	$	186,410,000
Mortgage-backed securities		41,998,000		554,000		(82,000	)		42,470,000
Municipal general obligation bonds		98,245,000		2,864,000		(30,000	)		101,079,000
Municipal revenue bonds		4,133,000		63,000		0			4,196,000
Other investments		500,000		0		0			500,000
	$	329,979,000	$	5,930,000	$	(1,254,000	)	$	334,655,000
201 8
U.S. Government agency debt obligations	$	196,109,000	$	310,000	$	(9,342,000	)	$	187,077,000
Mortgage-backed securities		44,263,000		187,000		(792,000	)		43,658,000
Municipal general obligation bonds		103,235,000		427,000		(1,165,000	)		102,497,000
Municipal revenue bonds		3,688,000		4,000		(58,000	)		3,634,000
Other investments		500,000		0		0			500,000
	$	347,795,000	$	928,000	$	(11,357,000	)	$	337,366,000

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

	Less than 12 Months				12 Months or More				Total
Description of Securities	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
2019
U.S. Government agency debt obligations	$	25,650,000	$	349,000	$	73,913,000	$	793,000	$	99,563,000	$	1,142,000
Mortgage-backed securities		2,838,000		28,000		10,423,000		54,000		13,261,000		82,000
Municipal general obligation bonds		3,755,000		18,000		994,000		12,000		4,749,000		30,000
Municipal revenue bonds		0		0		0		0		0		0
Other investments		0		0		0		0		0		0
	$	32,243,000	$	395,000	$	85,330,000	$	859,000	$	117,573,000	$	1,254,000
201 8
U.S. Government agency debt obligations	$	31,220,000	$	1,136,000	$	136,445,000	$	8,206,000	$	167,665,000	$	9,342,000
Mortgage-backed securities		11,460,000		136,000		23,762,000		656,000		35,222,000		792,000
Municipal general obligation bonds		28,923,000		299,000		43,961,000		866,000		72,884,000		1,165,000
Municipal revenue bonds		1,188,000		11,000		1,372,000		47,000		2,560,000		58,000
Other investments		0		0		0		0		0		0
	$	72,791,000	$	1,582,000	$	205,540,000	$	9,775,000	$	278,331,000	$	11,357,000

Investments Classified by Contractual Maturity Date [Table Text Block]

	Weighted Average Yield	Amortized Cost		Fair Value
Due in one year or less	2.04%	$	14,118,000	$	14,136,000
Due from one to five years	2.36		52,865,000		53,389,000
Due from five to ten years	2.66		105,156,000		106,960,000
Due after ten years	3.09		115,342,000		117,200,000
Mortgage-backed securities	2.76		41,998,000		42,470,000
Other investments	5.88		500,000		500,000
	2.76%	$	329,979,000	$	334,655,000