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Note 2 - Securities (Detail) - Amortized Cost and Approximate Fair Value of Held to Maturity Securities (Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member], USD $)	Dec. 31, 2012	Dec. 31, 2011
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities:
Securities Amortized Cost	$ 181,042	$ 218,571
Securities Gross Unrealized Gains	12,440	17,003
Securities Approximate Fair Value	$ 193,482	$ 235,574

This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

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- Definition

As of the balance sheet date, the excess of fair value over carrying value (amortized cost) of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding gain.

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