Note E - Leases - Balance Sheet Information (Details) - USD ($)	Jun. 30, 2020	Mar. 31, 2020	Apr. 01, 2019
Operating lease right-of-use asset			$ 63,000
Total right-of-use assets	$ 541,315
Finance lease liability, current	101,215	$ 100,728
Total lease liabilities	483,962
Other Noncurrent Assets [Member]
Operating lease right-of-use asset	39,986
Property, Plant and Equipment, Net [Member]
Finance lease right-of-use asset	501,329
Accounts Payable and Accrued Liabilities [Member]
Operating lease liability, current	39,986
Current Portion of Financing Lease [Member]
Finance lease liability, current	101,215
Other Noncurrent Liabilities [Member]
Finance lease liability, non-current	$ 342,761