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Note F - Property, Plant and Equipment (Details Textual)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
May 25, 2021
USD ($)
ft²
a
Construction in Progress, Gross $ 19,422,533 $ 15,925,306  
Facility in Sinton, Texas [Member]      
Area of Land (Acre) | a     26.5
Lessee, Operating Lease, Term of Contract (Year)     99 years
Capital Expenditures, Expected Cost     $ 22,000,000
Capital Expenditures, Increase in Expected Cost from Previous Estimate     $ 1,000,000
Construction in Progress, Gross 19,422,533    
Payments for Construction in Process 11,823,576    
Construction in Progress Expenditures Incurred but Not yet Paid $ 7,598,957    
Facility in Sinton, Texas [Member]      
Area of Real Estate Property (Square Foot) | ft²     70,000