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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Jun. 30, 2015
USD ($)
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) [Line Items]      
Financing Receivable, Modifications, Subsequent Default, Number of Contracts 0 0  
Threshold for Loans Evaluated for Impairment [Member]      
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) [Line Items]      
Loans and Leases Receivable, Gross, Commercial     $ 1,000,000
Threshold for Loans Evaluated for Impairment [Member] | Outside Consultant [Member]      
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) [Line Items]      
Loans and Leases Receivable, Gross, Commercial     250,000
Threshold for Loans Evaluated for Impairment [Member] | Criticized Relationships [Member]      
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) [Line Items]      
Financing Receivable, Gross     $ 125,000