Note E - Leases - Balance Sheet Information (Details) - USD ($)	Sep. 30, 2020	Mar. 31, 2020	Apr. 01, 2019
Operating lease right-of-use asset			$ 63,000
Total right-of-use assets	$ 528,209
Finance lease liability, current	101,704	$ 100,728
Total lease liabilities	452,218
Other Noncurrent Assets [Member]
Operating lease right-of-use asset	33,363
Property, Plant and Equipment, Net [Member]
Finance lease right-of-use asset	494,846
Accounts Payable and Accrued Liabilities [Member]
Operating lease liability, current	33,363
Current Portion of Financing Lease [Member]
Finance lease liability, current	101,704
Other Noncurrent Liabilities [Member]
Finance lease liability, non-current	$ 317,151