Note 10 - Major Customers and Export Sales - Foreign and Domestic Net Sales (Details) - USD ($)	3 Months Ended
Dec. 26, 2020	Dec. 28, 2019
Revenue	$ 166,925	$ 665,925
UNITED STATES
Revenue		492,209
Non-US [Member]
Revenue	$ 166,925	$ 173,716

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