Note 5 - Securities (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

Available-for-sale Securities [Table Text Block]

	September 30, 2016
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for S ale:
U.S. Government agencies and corporations	$	268,925	$	2,038	$	253	$	270,710
States and political subdivisions		12,572		352		---		12,924
Mortgage-backed securities		932		103		---		1,035
Corporate debt securities		6,016		440		---		6,456
Other securities		189		---		37		152
Total securities available for sale	$	288,634	$	2,933	$	290	$	291,277

	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]

	September 30 , 201 6
	Amortized Cost		Fair Value
Available for S ale:
Due in one year or less	$	1,980	$	2,009
Due after one year through five years		192,986		193,116
Due after give years through ten years		67,113		67,335
Due after ten years		26,366		28,665
No maturity		189		152
Total securities available for sale	$	288,634	$	291,277

	September 30 , 201 6
	Amortized Cost		Fair Value
Held to maturity :
Due in one year or less	$	2,813	$	2,871
Due after one year through five years		24,020		25,525
Due after give years through ten years		16,370		17,264
Due after ten years		94,844		99,618
Total securities held to maturity	$	138,047	$	145,278

Held-to-maturity Securities [Table Text Block]

	September 30, 2016
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to M aturity:
U.S. Government agencies and corporations	$	3,934	$	401	$	---	$	4,335
States and political subdivisions		132,409		6,781		25		139,165
Mortgage-backed securities		281		35		---		316
Corporate debt securities		1,423		39		---		1,462
Total securities held to maturity	$	138,047	$	7,256	$	25	$	145,278

	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]

	September 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	$	90,723	$	253	$	---	$	---
States and political subdivisions		780		1		1,440		24
Other securities		---		---		152		37
Total	$	91,503	$	254	$	1,592	$	61

	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