Note 5 - Securities (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

Available-for-sale Securities [Table Text Block]

	June 30, 2016
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for S ale:
U.S. Government agencies and corporations	$	280,386	$	1,576	$	239	$	281,723
States and political subdivisions		13,573		420		---		13,993
Mortgage-backed securities		1,031		113		---		1,144
Corporate debt securities		6,016		260		35		6,241
Other securities		189		---		48		141
Total securities available for sale	$	301,195	$	2,369	$	322	$	303,242

	December 31, 2015
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for S ale:
U.S. Government agencies and corporations	$	216,897	$	519	$	4,952	$	212,464
States and political subdivisions		15,934		541		---		16,475
Mortgage-backed securities		1,199		120		---		1,319
Corporate debt securities		6,015		22		291		5,746
Other securities		189		---		62		127
Total securities available for sale	$	240,234	$	1,202	$	5,305	$	236,131

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30 , 201 6
	Amortized Cost		Fair Value
Available for S ale:
Due in one year or less	$	7,518	$	7,539
Due after one year through five years		174,169		174,317
Due after give years through ten years		51,036		51,350
Due after ten years		68,283		69,895
No maturity		189		141
Total securities available for sale	$	301,195	$	303,242

	June 30 , 201 6
	Amortized Cost		Fair Value
Held to maturity :
Due in one year or less	$	2,148	$	2,188
Due after one year through five years		20,798		22,207
Due after give years through ten years		17,362		18,415
Due after ten years		98,116		103,431
Total securities held to maturity	$	138,424	$	146,241

Held-to-maturity Securities [Table Text Block]

	June 30, 2016
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to M aturity:
U.S. Government agencies and corporations	$	3,934	$	379	$	---	$	4,313
States and political subdivisions		132,773		7,407		36		140,144
Mortgage-backed securities		295		36		---		331
Corporate debt securities		1,422		31		---		1,453
Total securities held to maturity	$	138,424	$	7,853	$	36	$	146,241

	December 31, 2015
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to M aturity:
U.S. Government agencies and corporations	$	13,909	$	288	$	177	$	14,020
States and political subdivisions		136,373		6,179		330		142,222
Mortgage-backed securities		327		36		---		363
Corporate debt securities		1,419		10		2		1,427
Total securities held to maturity	$	152,028	$	6,513	$	509	$	158,032

Schedule of Temporary Impairment Losses, Investments [Table Text Block]

	June 30, 2016
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily I mpaired S ecurities:
U.S. Government agencies and corporations	$	81,878	$	200	$	3,659	$	39
States and political subdivisions		---		---		2,210		36
Corporate debt securities		---		---		942		35
Other securities		---		---		141		48
Total	$	81,878	$	200	$	6,952	$	158

	December 31, 2015
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily I mpaired S ecurities:
U.S. Government agencies and corporations	$	88,255	$	1,800	$	84,959	$	3,329
States and political subdivisions		3,449		24		10,161		306
Corporate debt securities		4,974		292		200		1
Other securities		---		---		127		62
Total	$	96,678	$	2,116	$	95,447	$	3,698