Note F - Property, Plant and Equipment (Details Textual)	1 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($)	May 31, 2020 USD ($) ft²	Mar. 31, 2021	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)
Construction in Progress, Gross	$ 3,874,444			$ 3,874,444	$ 3,797,364
Building [Member]
Area of Real Estate Property (Square Foot) | ft²		22,000
Payments to Acquire Productive Assets, Total		$ 1,083,000
Capital Expenditures Incurred but Not yet Paid		$ 1,100,000
Disposal Group, Estimated Proceeds	30,957			30,957
Property, Plant and Equipment, Disposals	2,688,381
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment	$ 2,657,424
Equipment [Member]
Capital Expenditures Incurred but Not yet Paid				$ 5,800,000
Forecast [Member]
Number of Capital Expenditure Projects			2