Note E - Leases - Balance Sheet Information (Details) - USD ($)	Dec. 31, 2021	Mar. 31, 2021
Total right-of-use assets	$ 588,107	$ 486,730
Finance lease liability, current	104,185	102,689
Total lease liabilities	417,092	373,096
Other Noncurrent Assets [Member]
Operating lease right-of-use asset	125,676	4,850
Property, Plant and Equipment, Net [Member]
Finance lease right-of-use asset	462,431	481,880
Accounts Payable and Accrued Liabilities [Member]
Operating lease liability, current	51,366	4,850
Current Portion of Financing Lease [Member]
Finance lease liability, current	104,185	102,689
Other Noncurrent Liabilities [Member]
Operating lease liability, non-current	74,310	0
Finance lease liability, non-current	$ 187,231	$ 265,557