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Note 4 - Loans and Related Allowance for Loan Losses (Details) - Major Classifications of Net Loans (USD $)
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Financing Receivable Gross $ 435,725,000 $ 408,433,000    
Less allowance for loan and lease loss (7,046,000) (7,779,000) (6,819,000) (6,221,000)
Net loans 428,679,000 400,654,000    
Commercial and Industrial [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Financing Receivable Gross 54,498,000 62,188,000    
Less allowance for loan and lease loss (614,000) (1,732,000) (1,296,000) (1,234,000)
Real Estate Construction [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Financing Receivable Gross 25,601,000 22,522,000    
Less allowance for loan and lease loss (576,000) (1,123,000) (438,000) (356,000)
Residential Real Estate Mortgage [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Financing Receivable Gross 210,310,000 203,872,000    
Less allowance for loan and lease loss (3,664,000) (2,872,000) (3,731,000) (3,392,000)
Commercial Real Estate Mortgage [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Financing Receivable Gross 141,171,000 115,734,000    
Less allowance for loan and lease loss (2,170,000) (1,991,000) (1,306,000) (1,143,000)
Consumer Installment [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Financing Receivable Gross 4,145,000 4,117,000    
Less allowance for loan and lease loss $ (22,000) $ (61,000) $ (48,000) $ (96,000)