Note E - Leases (Details Textual) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Apr. 01, 2019
Operating Lease, Right-of-Use Asset			$ 41,557		$ 63,000
Operating Lease, Monthly Payments			2,728
Finance Lease, Liability, Payment, Due, Total			$ 517,218
Operating Leases, Rent Expense, Total		$ 8,184		$ 24,552
Operating Lease, Weighted Average Remaining Lease Term			1 year 109 days
Finance Lease, Weighted Average Remaining Lease Term			4 years 292 days
Operating Lease, Weighted Average Discount Rate, Percent			7.00%
Finance Lease, Weighted Average Discount Rate, Percent			1.90%
Operating Lease, Liability, Total			$ 41,557		$ 63,000
Heavy-duty Forklift [Member]
Lessee, Finance Lease, Term of Contract	5 years
Finance Lease, Liability, Payment, Due, Total	$ 518,616
Finance Lease, Monthly Payment	$ 9,074