Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Major Customer Concentration (Details Textual)

v3.22.0.1
Note 7 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2021
Revenue Benchmark [Member] | Customer A [Member]      
Concentration Risk, Percentage 15.00%    
Revenue Benchmark [Member] | Customer B [Member]      
Concentration Risk, Percentage 11.00% 19.00%  
Revenue Benchmark [Member] | Customer C [Member]      
Concentration Risk, Percentage 10.00%    
Revenue Benchmark [Member] | Customer D [Member]      
Concentration Risk, Percentage   12.00%  
Accounts Receivable [Member] | Customer A [Member]      
Concentration Risk, Percentage     17.00%
Accounts Receivable [Member] | Customer D [Member]      
Concentration Risk, Percentage 11.00%