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Note 3 - Restrictions On Cash And Due From Banks (Detail) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Cash and Due from Banks (in Dollars) $ 38,544,000 $ 40,151,000
Reserve Balance [Member]
   
Cash and Due from Banks (in Dollars) $ 17.8 $ 14.6
Percentage of Interest-bearing Domestic Deposits to Deposits 0.25% 0.25%