Note F - Property, Plant and Equipment (Details Textual) - USD ($)	1 Months Ended	4 Months Ended
Jun. 30, 2020	Sep. 30, 2020	Mar. 31, 2020
Construction in Progress, Gross		$ 5,427,263	$ 3,797,364
Equipment [Member]
Capital Expenditures Incurred but Not yet Paid	$ 5,800,000	$ 7,200,000

Future cash outflow to pay for purchases of fixed assets that have occurred.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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