Note 3 - Securities (Details) - Debt Securities by Maturity - Jun. 30, 2015 - USD ($)	Total
Note 3 - Securities (Details) - Debt Securities by Maturity [Line Items]
Due in 2015	0.88%
Due in 2015	$ 6,702,000
Due in 2015	$ 6,707,000
Due in 2016 through 2020	1.42%
Due in 2016 through 2020	$ 135,850,000
Due in 2016 through 2020	$ 135,897,000
Due in 2021 through 2025	3.13%
Due in 2021 through 2025	$ 65,615,000
Due in 2021 through 2025	$ 65,485,000
Due in 2026 and beyond	3.55%
Due in 2026 and beyond	$ 83,835,000
Due in 2026 and beyond	$ 83,579,000
	2.18%
	$ 372,960,000
	$ 373,446,000
Collateralized Mortgage Backed Securities [Member]
Note 3 - Securities (Details) - Debt Securities by Maturity [Line Items]
No single maturity, weighted average yield	1.68%
No single maturity, amortized cost	$ 79,018,000
No single maturity, fair value	$ 79,841,000
Other Debt Obligations [Member]
Note 3 - Securities (Details) - Debt Securities by Maturity [Line Items]
No single maturity, weighted average yield	2.52%
No single maturity, amortized cost	$ 1,940,000
No single maturity, fair value	$ 1,937,000

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The aggregate weighted average yield of a securities portfolio.

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The weighted average yield of a securities portfolio with due dates after 10 years.

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The weighted average yield of a securities portfolio with due dates before 5 years and before 10 years.

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The weighted average yield of a securities portfolio with due dates after 1 year and before 5 years.

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The weighted average yield of securities portfolio with due dates in less than 1 year.

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The weighted average yield of a securities portfolio with no single maturity date defined.

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This item represents the cost of debt 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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Amount after adjustments of available-for-sale debt securities at cost, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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