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Note N - Concentrations (Details Textual)
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Accounts Receivable, Allowance for Credit Loss, Ending Balance $ 10,000 $ 10,000
Milestone China [Member]    
Accounts Receivable, before Allowance for Credit Loss   1,917,990
Accounts Receivable, Allowance for Credit Loss, Ending Balance   1,817,990
Accounts Receivable, Credit Loss Expense (Reversal)   $ 1,250,928
Revenue Benchmark [Member] | Customer Concentration Risk [Member]    
Concentration Risk, Percentage 53.00%  
Number of Customers 1 2
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]    
Concentration Risk, Percentage   53.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer One [Member]    
Concentration Risk, Percentage   43.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Two [Member]    
Concentration Risk, Percentage   10.00%
Accounts Receivable [Member]    
Concentration Risk, Percentage 77.00%  
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]    
Concentration Risk, Percentage   82.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer One [Member]    
Concentration Risk, Percentage   49.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Two [Member]    
Concentration Risk, Percentage   33.00%