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Note 7 - Loans And Related Allowance For Loan Losses (Details) - Major Classifications of Net Loans (USD $)
Sep. 30, 2013
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable Gross $ 419,060,000 $ 408,433,000
Less allowance for loan losses 7,821,000 7,779,000
Net loans 411,239,000 400,654,000
Commercial and Industrial [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable Gross 50,265,000 62,188,000
Less allowance for loan losses 788,000 1,700,000
Real Estate Construction [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable Gross 25,487,000 22,522,000
Residential Real Estate Mortgage [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable Gross 203,312,000 203,872,000
Less allowance for loan losses 3,600,000 2,900,000
Commercial Real Estate Mortgage [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable Gross 135,760,000 115,734,000
Consumer Installment [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Financing Receivable Gross $ 4,236,000 $ 4,117,000