Annual report pursuant to Section 13 and 15(d)

Note E - Concentrations (Details Textual)

v3.19.3
Note E - Concentrations (Details Textual)
12 Months Ended
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
Property, Plant and Equipment, Net, Ending Balance $ 5,413,241 $ 4,744,584  
MEXICO      
Property, Plant and Equipment, Net, Ending Balance $ 1,406,546 $ 412,755  
Revenue Benchmark [Member] | Customer Concentration Risk [Member]      
Number of Major Customers 2 2 2
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]      
Concentration Risk, Percentage 29.00% 33.00% 35.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]      
Number of Major Customers 2 2  
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]      
Concentration Risk, Percentage 28.00% 45.00%