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Note 17 - Commitments and Credit Risk (Details) (USD $)
9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Credit Card Commitments to Extend Credit [Member]
Dec. 31, 2013
Credit Card Commitments to Extend Credit [Member]
Sep. 30, 2014
Other Loan Commitments to Extend Credit [Member]
Dec. 31, 2013
Other Loan Commitments to Extend Credit [Member]
Sep. 30, 2014
Standby Letters of Credit [Member]
Dec. 31, 2013
Standby Letters of Credit [Member]
Sep. 30, 2014
Minimum [Member]
Sep. 30, 2014
Maximum [Member]
Note 17 - Commitments and Credit Risk (Details) [Line Items]                    
Commitments and Contingencies     $ 484,594,000 $ 464,108,000 $ 449,423,000 $ 408,388,000        
Letters of Credit Outstanding, Amount 9,721,000 10,349,000                
Letters of Credit Term                 7 months 5 years
Deferred Revenue             $ 20,000 $ 10,000