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Note 1 - Organization and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Revenues, Total $ 19,482,167 $ 24,155,362
Sales Channel [Member] | Revenue Benchmark [Member]    
Concentration Risk, Percentage
Sales Channel, Directly to Consumer [Member]    
Revenues, Total $ 15,655,337 $ 19,436,124
Sales Channel, Directly to Consumer [Member] | Sales Channel [Member] | Revenue Benchmark [Member]    
Concentration Risk, Percentage 80.40% 80.50%
Sales Channel, Through Intermediary [Member]    
Revenues, Total $ 3,826,830 $ 4,719,238
Sales Channel, Through Intermediary [Member] | Sales Channel [Member] | Revenue Benchmark [Member]    
Concentration Risk, Percentage 19.60% 19.50%