Note 3 - Revenue Recognition - Revenue Disaggregated by Geography (Details) - USD ($)	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024
Customer revenue amount	$ 35,215,454	$ 36,886,500
Revenues	$ 35,215,454	$ 36,886,500
Revenue Benchmark [Member] \| Geographic Concentration Risk [Member]
Customer concentration risk percentage	100.00%	100.00%
UNITED STATES
Customer revenue amount	$ 26,868,826	$ 25,984,679
Revenues	$ 26,868,826	$ 25,984,679
UNITED STATES \| Revenue Benchmark [Member] \| Geographic Concentration Risk [Member]
Customer concentration risk percentage	76.00%	70.00%
Latin America [Member]
Customer revenue amount	$ 6,717,588	$ 9,877,373
Revenues	$ 6,717,588	$ 9,877,373
Latin America [Member] \| Revenue Benchmark [Member] \| Geographic Concentration Risk [Member]
Customer concentration risk percentage	19.00%	27.00%
Other than United States and Latin America [Member]
Customer revenue amount	$ 1,629,040	$ 1,024,448
Revenues	$ 1,629,040	$ 1,024,448
Other than United States and Latin America [Member] \| Revenue Benchmark [Member] \| Geographic Concentration Risk [Member]
Customer concentration risk percentage	5.00%	3.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

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+ Details