Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	$ 153,558	$ 160,532
Gross Unrealized Gains	4,730	2,605
Gross Unrealized Losses	(2,267)	(5,994)
Fair Value	156,021	157,143
US Government Agencies Debt Securities [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	23,323	27,289
Gross Unrealized Gains	244	135
Gross Unrealized Losses	(684)	(1,661)
Fair Value	22,883	25,763
US States and Political Subdivisions Debt Securities [Member] \| Taxable [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	2,955	3,787
Gross Unrealized Gains	171	46
Gross Unrealized Losses		(38)
Fair Value	3,126	3,795
US States and Political Subdivisions Debt Securities [Member] \| Tax-exempt [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	93,609	86,524
Gross Unrealized Gains	3,633	1,562
Gross Unrealized Losses	(1,119)	(3,267)
Fair Value	96,123	84,819
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	30,080	38,816
Gross Unrealized Gains	368	535
Gross Unrealized Losses	(464)	(1,028)
Fair Value	29,984	38,323
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	2,841	3,366
Gross Unrealized Gains	281	327
Fair Value	3,122	3,693
Debt Securities [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	152,808	159,782
Gross Unrealized Gains	4,697	2,605
Gross Unrealized Losses	(2,267)	(5,994)
Fair Value	155,238	156,393
Equity Securities in Financial Institutions [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	750	750
Gross Unrealized Gains	33
Fair Value	$ 783	$ 750

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

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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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