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Note 3 - Loans Receivable (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
Mar. 31, 2015
Dec. 31, 2015
USD ($)
Note 3 - Loans Receivable (Details) [Line Items]      
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing $ 305   $ 842
Financing Receivable, Modifications, Number of Contracts   1  
Performing Financial Instruments [Member]      
Note 3 - Loans Receivable (Details) [Line Items]      
Financing Receivable, Modifications, Recorded Investment $ 6,400    
Financing Receivable, Modifications, Number of Contracts 4    
Nonperforming Financial Instruments [Member]      
Note 3 - Loans Receivable (Details) [Line Items]      
Financing Receivable, Modifications, Recorded Investment $ 247    
Financing Receivable, Modifications, Number of Contracts 2 2  
Troubled Debt Restructuring [Member]      
Note 3 - Loans Receivable (Details) [Line Items]      
Financing Receivable, Modifications, Recorded Investment $ 6,600   $ 6,700
Financing Receivable, Modifications, Number of Contracts 6