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Note 4 - Investment Securities (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Available-for-sale Securities Pledged as Collateral	$ 109,800,000	$ 102,500,000
	5,913,000	7,422,000
Federal Home Loan Bank Stock	4,900,000	6,300,000
Aggregate Cost [Member]
	$ 5,900,000	$ 7,400,000
Corporate Debt Securities [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	1

Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired.

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