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Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans $ 741,355 $ 738,282 $ 723,986
Consumer Credit Card Financing Receivable [Member] | Performing Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 0 0  
Consumer Credit Card Financing Receivable [Member] | Nonperforming Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 5 17  
Consumer Credit Card Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 5 17  
Consumer Other Financing Receivable [Member] | Performing Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 48,250 50,310  
Consumer Other Financing Receivable [Member] | Nonperforming Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 225 247  
Consumer Other Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 48,475 50,557  
Consumer [Member] | Performing Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 48,250 50,310  
Consumer [Member] | Nonperforming Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 230 264  
Consumer [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 48,480 50,574 51,816
All Other [Member] | Performing Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 8,527 9,429  
All Other [Member] | Nonperforming Financing Receivable [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans 1 2  
All Other [Member]
      
Note 4 - Loans (Details) - Consumer Loans by Credit Quality Indicators [Line Items]      
Gross Loans $ 8,528 $ 9,431 $ 8,692