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Note 5 - Securities (Tables)

6 Months Ended

Jun. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities [Table Text Block]

		June 30, 2015
		Amortized Costs				Gross Unrealized Gains				Gross Unrealized Losses				Fair Values
Available for Sale:
U.S. Government agencies and corporations		$	200,713			$	464			$	8,231			$	192,946
States and political subdivisions			16,481				649				---				17,130
Mortgage-backed securities			1,530				160				---				1,690
Corporate debt securities			6,991				18				386				6,623
Other securities			188				---				53				135
Total securities available for sale		$	225,903			$	1,291			$	8,670			$	218,524

		December 31, 2014
		Amortized Costs				Gross Unrealized Gains				Gross Unrealized Losses				Fair Values
Available for Sale:
U.S. Government agencies and corporations		$	197,740			$	973			$	4,494			$	194,219
States and political subdivisions			18,529				851				---				19,380
Mortgage-backed securities			1,830				184				---				2,014
Corporate debt securities			6,991				140				27				7,104
Other securities			189				---				62				127
Total securities available for sale		$	225,279			$	2,148			$	4,583			$	222,844

Held-to-maturity Securities [Table Text Block]

		June 30, 2015
		Amortized Costs				Gross Unrealized Gains				Gross Unrealized Losses				Fair Values
Held to Maturity:
U.S. Government agencies and corporations		$	15,914			$	302			$	428			$	15,788
States and political subdivisions			138,001				5,133				1,838				141,296
Mortgage-backed securities			373				47				---				420
Corporate debt securities			1,416				6				1				1,421
Total securities held to maturity		$	155,704			$	5,488			$	2,267			$	158,925

		December 31, 2014
		Amortized Costs				Gross Unrealized Gains				Gross Unrealized Losses				Fair Values
Held to Maturity:
U.S. Government agencies and corporations		$	18,922			$	350			$	245			$	19,027
States and political subdivisions			140,702				6,823				727				146,798
Mortgage-backed securities			415				51				---				466
Corporate debt securities			1,413				1				2				1,412
Total securities held to maturity		$	161,452			$	7,225			$	974			$	167,703

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

		June 30, 2015
		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		$	81,425			$	2,993			$	88,618			$	5,666
States and political subdivisions			27,353				965				9,509				873
Corporate debt securities			4,882				386				200				1
Other securities			---				---				189				53
Total		$	113,660			$	4,344			$	98,516			$	6,593

		December 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		$	6,964			$	30			$	156,149			$	4,709
States and political subdivisions			1,222				35				19,818				692
Corporate debt securities			450				2				1,948				27
Other securities			---				---				127				62
Total		$	8,636			$	67			$	178,042			$	5,490

X

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.

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