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Note J - Segment Information (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 18 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total     $ 1,073,060 $ 1,551,840  
Gain (Loss) on Extinguishment of Debt, Total     (0) 1,706,614  
Paycheck Protection Program CARES Act [Member]          
Gain (Loss) on Extinguishment of Debt, Total         $ 1,706,614
Nonoperating Income (Expense) [Member] | Paycheck Protection Program CARES Act [Member]          
Gain (Loss) on Extinguishment of Debt, Total       1,706,614  
Nonoperating Income (Expense) [Member] | Hot-rolled Coil Steel Contracts [Member]          
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total $ 3,749,420 $ (6,830,780) $ 6,503,660 $ (8,219,740)  
Derivative Instruments Not Designated as Hedging Instruments, Loss   $ 6,830,780     $ 8,219,740