Note E - Leases (Details Textual) - USD ($)	1 Months Ended	3 Months Ended
	Oct. 31, 2019	Jun. 30, 2021
Operating Lease, Monthly Payments		$ 4,878
Finance Lease, Liability, Payment, Due, Total		$ 353,890
Operating Lease, Weighted Average Remaining Lease Term (Year)		2 years 9 months 18 days
Finance Lease, Weighted Average Remaining Lease Term (Year)		3 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent		7.00%
Finance Lease, Weighted Average Discount Rate, Percent		1.90%
Heavy-duty Forklift [Member]
Lessee, Finance Lease, Term of Contract (Year)	5 years
Finance Lease, Liability, Payment, Due, Total	$ 518,616
Finance Lease, Monthly Payment	$ 9,074