Note 5 - Securities (Tables)

3 Months Ended

Mar. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities [Table Text Block]

	March 31, 2014
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	173,798	$	233	$	17,696	$	156,335
States and political subdivisions		21,634		813		39		22,408
Mortgage-backed securities		2,392		215		---		2,607
Corporate debt securities		8,802		83		312		8,573
Other securities		529		---		51		478
Total	$	207,155	$	1,344	$	18,098	$	190,401

	December 31, 2013
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	169,818	$	199	$	22,163	$	147,854
States and political subdivisions		22,830		746		120		23,456
Mortgage-backed securities		2,627		213		---		2,840
Corporate debt securities		7,804		97		506		7,395
Other securities		879		---		22		857
Total securities available for sale	$	203,958	$	1,255	$	22,811	$	182,402

Held-to-maturity Securities [Table Text Block]

	March 31, 2014
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to Maturity:
U.S. Government agencies and corporations	$	17,940	$	298	$	1,187	$	17,051
States and political subdivisions		145,565		4,298		3,736		146,127
Mortgage-backed securities		484		52		---		536
Corporate debt securities		1,409		---		18		1,391
Total	$	165,398	$	4,648	$	4,941	$	165,105

	December 31, 2013
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to Maturity:
U.S. Government agencies and corporations	$	13,973	$	280	$	1,448	$	12,805
States and political subdivisions		149,490		2,971		6,502		145,959
Mortgage-backed securities		520		53		---		573
Total securities held to maturity	$	163,983	$	3,304	$	7,950	$	159,337

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

	March 31, 2014
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily Impaired Securities:
U.S. Government agencies and corporations	$	144,919	$	15,556	$	20,880	$	3,327
States and political subdivisions		24,639		1,178		22,165		2,597
Corporate debt securities		8,094		330		---		---
Other securities		138		51		---		---
Total	$	177,790	$	17,115	$	43,045	$	5,924

	December 31, 2013
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily Impaired Securities:
U.S. Government agencies and corporations	$	138,324	$	20,400	$	15,796	$	3,211
States and political subdivisions		58,013		6,131		2,697		491
Corporate debt securities		5,511		506		---		---
Other securities		167		22		---		---
Total	$	202,015	$	27,059	$	18,493	$	3,702