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Note 20 - Product and Geographic Segment Data - Net Sales to Outside Customers (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net Sales	$ 26,472,568	$ 32,271,647
UNITED STATES
Net Sales	21,192,000	23,754,000
MEXICO
Net Sales	$ 5,280,000	$ 8,518,000

X

- Definition

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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