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Note 3 - Loans Receivable (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2014
Sep. 30, 2015
USD ($)
Sep. 30, 2014
Dec. 31, 2014
USD ($)
Note 3 - Loans Receivable (Details) [Line Items]          
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing (in Dollars) $ 99,000   $ 99,000   $ 0
Financing Receivable, Modifications, Number of Contracts 0 1 1 1  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts     0   0
Performing Financial Instruments [Member]          
Note 3 - Loans Receivable (Details) [Line Items]          
Financing Receivable, Modifications, Recorded Investment (in Dollars) $ 6,500,000   $ 6,500,000    
Financing Receivable, Modifications, Number of Contracts     4    
Nonperforming Financial Instruments [Member]          
Note 3 - Loans Receivable (Details) [Line Items]          
Financing Receivable, Modifications, Recorded Investment (in Dollars) $ 258,000   $ 258,000    
Financing Receivable, Modifications, Number of Contracts 2   2   2
Troubled Debt Restructuring [Member]          
Note 3 - Loans Receivable (Details) [Line Items]          
Financing Receivable, Modifications, Recorded Investment (in Dollars) $ 6,800,000   $ 6,800,000   $ 6,700,000
Financing Receivable, Modifications, Number of Contracts     6