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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

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