Note 7 - Revenue Recognition - Revenue by Geographic Region (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net sales	$ 3,060,113	$ 3,057,518	$ 9,705,262	$ 8,278,141
UNITED STATES
Net sales	2,462,696	2,247,677	8,089,868	6,257,453
Non-US [Member]
Net sales	$ 597,417	$ 809,841	$ 1,615,394	$ 2,020,688

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.

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+ Details