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Note 13 - Revenue - Product Sales Disaggregated by Geographic Area (Details) - USD ($)	3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024
Revenue from Contract with Customer, Excluding Assessed Tax	$ 5,506,122	$ 6,011,573	$ 20,018,175	$ 18,742,040	$ 17,471,669	$ 26,493,169
Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 5,506,122	$ 6,011,573	$ 20,018,175	$ 18,742,040
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
Americas [Member] | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 5,336,009	$ 5,216,401	$ 17,385,460	$ 16,449,178
Concentration Risk, Percentage	97.00%	87.00%	87.00%	88.00%
Non-US [Member] | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 170,113	$ 795,172	$ 2,632,715	$ 2,292,862
Concentration Risk, Percentage	3.00%	13.00%	13.00%	12.00%

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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.

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Amount, excluding 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.

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