Note 7 - Revenue Recognition - Revenue by Geographic Region (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales	$ 3,390,205	$ 2,650,299	$ 6,645,149	$ 5,220,623
UNITED STATES
Net sales	2,808,237	2,067,533	5,627,173	4,009,775
Non-US [Member]
Net sales	$ 581,968	$ 582,766	$ 1,017,976	$ 1,210,848

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