Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Significant Customers and Geographical Information (Details Textual)

v3.7.0.1
Note 10 - Significant Customers and Geographical Information (Details Textual)
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
USD ($)
Mar. 31, 2016
Dec. 31, 2016
USD ($)
Long-term Purchase Commitment, Minimum Quantity Required 2,000 3,000      
Long-term Purchase Commitment, Remaining Quantities     700    
Long-term Purchase Commitment, Remaining Amount     $ 299,180    
Long-term Purchase Commitment, Amount     514,748    
Accounts Receivable, Gross     $ 2,481,055   $ 2,994,686
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]          
Number of Customers     2 3  
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Two Customers [Member]          
Concentration Risk, Percentage     79.00%    
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer One [Member]          
Concentration Risk, Percentage     52.00% 35.00%  
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer Two [Member]          
Concentration Risk, Percentage     27.00% 26.00%  
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Three Customers [Member]          
Concentration Risk, Percentage       82.00%  
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer Three [Member]          
Concentration Risk, Percentage       21.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member]          
Number of Customers     2   2
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Two Customers [Member]          
Concentration Risk, Percentage     83.00%   85.00%