Note 5 - Securities (Tables)

6 Months Ended

Jun. 30, 2013

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities [Table Text Block]

	June 30, 2013
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Treasury	$	2,002	$	30	$	---	$	2,032
U.S. Government agencies		173,812		355		12,381		161,786
Mortgage-backed securities		3,324		257		---		3,581
States and political subdivisions		27,080		906		99		27,887
Corporate		8,807		135		504		8,438
Other securities		2,345		10		131		2,224
Total	$	217,370	$	1,693	$	13,115	$	205,948

	December 31, 2012
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Treasury	$	2,005	$	68	$	---	$	2,073
U.S. Government agencies		128,805		1,381		622		129,564
Mortgage-backed securities		4,202		367		---		4,569
States and political subdivisions		35,029		1,753		3		36,779
Corporate		14,207		368		---		14,575
Other securities		2,419		9		173		2,255
Total	$	186,667	$	3,946	$	798	$	189,815

Held-to-maturity Securities [Table Text Block]

	June 30, 2013
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to Maturity:
U.S. Government agencies	$	13,980	$	336	$	651	$	13,665
Mortgage-backed securities		586		62		---		648
States and political subdivisions		152,349		3,492		6,270		149,571
Total	$	166,915	$	3,890	$	6,921	$	163,884

	December 31, 2012
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Held to Maturity:
U.S. Government agencies	$	7,988	$	563	$	---	$	8,551
Mortgage-backed securities		691		73		---		764
States and political subdivisions		151,209		9,880		216		160,873
Corporate		651		7		---		658
Total	$	160,539	$	10,523	$	216	$	170,846

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

	June 30, 2013
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily Impaired Securities:
U.S. Government agencies	$	164,695	$	13,032	$	---	$	---
States and political subdivisions		58,968		6,365		309		4
Corporate		4,513		504		---		---
Other securities		---		---		173		131
Total	$	228,176	$	19,901	$	482	$	135

	December 31, 2012
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily Impaired Securities:
U.S. Government agencies	$	44,351	$	622	$	---	$	---
States and political subdivisions		9,358		216		482		3
Other securities		---		---		133		172
Total	$	53,709	$	838	$	615	$	175