Note 5 - Securities (Details) - Securities Available-for-sale - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Available for Sale:
Securities available-for-sale, amortized costs	$ 214,630	$ 225,279
Securities available-for-sale, gross unrealized gains	1,512	2,148
Securities available-for-sale, gross unrealized losses	4,910	4,583
Securities available-for-sale, fair value	211,232	222,844
US Government Agencies Debt Securities [Member]
Available for Sale:
Securities available-for-sale, amortized costs	190,723	197,740
Securities available-for-sale, gross unrealized gains	757	973
Securities available-for-sale, gross unrealized losses	4,557	4,494
Securities available-for-sale, fair value	186,923	194,219
US States and Political Subdivisions Debt Securities [Member]
Available for Sale:
Securities available-for-sale, amortized costs	16,348	18,529
Securities available-for-sale, gross unrealized gains	601	851
Securities available-for-sale, fair value	16,949	19,380
Collateralized Mortgage Backed Securities [Member]
Available for Sale:
Securities available-for-sale, amortized costs	1,355	1,830
Securities available-for-sale, gross unrealized gains	137	184
Securities available-for-sale, fair value	1,492	2,014
Corporate Debt Securities [Member]
Available for Sale:
Securities available-for-sale, amortized costs	6,015	6,991
Securities available-for-sale, gross unrealized gains	17	140
Securities available-for-sale, gross unrealized losses	300	27
Securities available-for-sale, fair value	5,732	7,104
Other Securities [Member]
Available for Sale:
Securities available-for-sale, amortized costs	189	189
Securities available-for-sale, gross unrealized losses	53	62
Securities available-for-sale, fair value	$ 136	$ 127

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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