Note 1 - Organization and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Revenues, Total	$ 4,749,426	$ 4,376,518	$ 9,862,902	$ 9,751,923
Sales Channel [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
Sales Channel, Directly to Consumer [Member]
Revenues, Total	$ 3,634,793	$ 3,625,719	$ 7,587,523	$ 8,049,724
Sales Channel, Directly to Consumer [Member] | Sales Channel [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	76.50%	82.80%	76.90%	82.50%
Sales Channel, Through Intermediary [Member]
Revenues, Total	$ 1,114,633	$ 750,799	$ 2,275,379	$ 1,702,199
Sales Channel, Through Intermediary [Member] | Sales Channel [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	23.50%	17.20%	23.10%	17.50%