Note 13 - Commitments and Contingencies (Details Textual) - USD ($)		3 Months Ended
	Mar. 01, 2021	Mar. 31, 2021	Mar. 31, 2020
Lessee, Operating Lease, Monthly Rent Payments	$ 750
Operating Lease, Expense		$ 10,700	$ 13,300
Operating Lease, Weighted Average Remaining Lease Term (Month)		210 days
Operating Lease, Weighted Average Discount Rate, Percent		11.30%
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year		$ 8,694
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		681	4,500
Operating Lease, Payments		10,700	14,700
Short-term Lease, Cost		$ 5,238	$ 4,275