Note J - Segment Information (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total	$ 686,640	$ (2,953,960)
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]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total	2,754,240
Nonoperating Income (Expense) [Member] \| Hot-rolled Coil Steel Contracts [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total	$ 2,754,240	(1,388,960)
Derivative Instruments Not Designated as Hedging Instruments, Loss		$ 1,388,960
Nonoperating Income (Expense) [Member] \| Paycheck Protection Program CARES Act [Member]
Gain (Loss) on Extinguishment of Debt, Total			$ 1,706,614

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959

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Amount of realized and unrealized loss of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
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