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Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses [Line Items]    
Less Than 12 Months - Fair Value $ 8,427 $ 2,018
Less Than 12 Months- Unrecognized Loss (404) (63)
12 Months or More - Fair Value 242 260
12 Months or More - Unrecognized Loss (21) (2)
Total - Fair Value 8,669 2,278
Total - Unrecognized Loss (425) (65)
US States and Political Subdivisions Debt Securities [Member]
    
Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses [Line Items]    
Less Than 12 Months - Fair Value 8,427 2,018
Less Than 12 Months- Unrecognized Loss (404) (63)
12 Months or More - Fair Value 242 260
12 Months or More - Unrecognized Loss (21) (2)
Total - Fair Value 8,669 2,278
Total - Unrecognized Loss $ (425) $ (65)