Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Major Customer Concentration (Details Textual)

v3.19.3.a.u2
Note 7 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2019
Revenue Benchmark [Member]      
Number of Major Customers 3 2  
Revenue Benchmark [Member] | Customer One [Member]      
Concentration Risk, Percentage 18.00% 18.00%  
Revenue Benchmark [Member] | Customer Two [Member]      
Concentration Risk, Percentage 13.00% 14.00%  
Revenue Benchmark [Member] | Customer Three [Member]      
Concentration Risk, Percentage 10.00%    
Revenue Benchmark [Member] | Three Customers [Member]      
Concentration Risk, Percentage 41.00%    
Revenue Benchmark [Member] | Two Customers [Member]      
Concentration Risk, Percentage   32.00%  
Accounts Receivable [Member]      
Number of Major Customers 2   2
Accounts Receivable [Member] | Customer One [Member]      
Concentration Risk, Percentage 14.00%   16.00%
Accounts Receivable [Member] | Customer Two [Member]      
Concentration Risk, Percentage 11.00%   12.00%
Accounts Receivable [Member] | Two Customers [Member]      
Concentration Risk, Percentage 25.00%   28.00%