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Note 10 - Major Customers and Accounts Receivables (Details) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Sales Revenue, Goods, Net [Member]          
Note 10 - Major Customers and Accounts Receivables (Details) [Line Items]          
Concentration Risk, Number of Major Customers 1 2 1 2  
Concentration Risk, Percentage 81.00% 55.00% 63.00% 73.00%  
Accounts Receivable [Member]          
Note 10 - Major Customers and Accounts Receivables (Details) [Line Items]          
Concentration Risk, Number of Major Customers     4   1
Concentration Risk, Percentage     52.00%   62.00%