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Note H - Derivative Financial Instruments - Net Fair Value of Derivative Financial Instruments (Details) - USD ($) | Dec. 31, 2022 | Mar. 31, 2022
--- | --- | ---
Derivative assets |  | $ 933,200
Designated as Hedging Instrument [Member] | Hot-rolled Coil Future Contracts [Member] | Current Portion of Derivative Liability [Member] |  |
Derivative assets |  | 4,240,740
Designated as Hedging Instrument [Member] | Hot-rolled Coil Future Contracts [Member] | Short [Member] |  |
Derivative assets | $ 22,100 |
Designated as Hedging Instrument [Member] | Hot-rolled Coil Future Contracts [Member] | Short [Member] | Current Portion of Derivative Liability [Member] |  |
Derivative liabilities |  | 8,905,500
Not Designated as Hedging Instrument [Member] | Hot-rolled Coil Future Contracts [Member] | Short [Member] | Current Portion of Derivative Liability [Member] |  |
Derivative liabilities | 649,700 | $ 5,524,020
Not Designated as Hedging Instrument [Member] | Hot-rolled Coil Future Contracts [Member] | Short [Member] | Current Portion of Derivative Assets [Member] |  |
Derivative assets | $ 786,720 |

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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