Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Major Customer Concentration - Customers Comprising 10% or More of Net Sales (Details)

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Note 7 - Major Customer Concentration - Customers Comprising 10% or More of Net Sales (Details) - Customer Concentration Risk [Member] - Sales Revenue, Net [Member]
3 Months Ended 9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Customer A [Member]        
Customer 20.00% 15.00% 22.00% 20.00%
Customer B [Member]        
Customer 13.00% 15.00% 14.00% 15.00%
Customer C [Member]        
Customer 10.00% [1] [1] [1]
[1] Less than 10%