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Note H - Derivative Financial Instruments - Gain (Loss) Recognized in Other Comprehensive Income (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Hot-rolled Coil Future Contracts [Member] |  |  |  |
Gain recognized in OCI | $ 3,473,300 |  |  |
Hot-rolled coil steel contracts | (14,716,860) |  |  |
Hot-rolled coil steel contracts | 3,473,300 |  |  |
Hot-rolled coil steel contracts | 14,716,860 |  |  |
Total | (14,716,860) |  |  |
Hot-rolled Coil Future Contracts [Member] | Cost of Sales [Member] |  |  |  |
Hot-rolled coil steel contracts | 49,200 |  |  |
Hot-rolled coil steel contracts | (49,200) |  |  |
Total | 49,200 |  |  |
Hot-rolled Coil Future Contracts [Member] | Designated as Hedging Instrument [Member] |  |  |  |
Gain recognized in OCI | 3,473,300 |  |  |
Hot-rolled coil steel contracts | 3,473,300 |  |  |
Hot-rolled Coil Future Contracts [Member] | Designated as Hedging Instrument [Member] | Sales [Member] |  |  |  |
Hot-rolled coil steel contracts | 14,766,060 |  | $ 22,950,860 | $ (396,720)
Hot-rolled coil steel contracts | (14,766,060) |  | (22,950,860) | 396,720
Total | $ 14,766,060 |  | 22,950,860 | (396,720)
Hotrolled Coil Futures Contracts 2 [Member] |  |  |  |
Gain recognized in OCI |  | $ 3,364,460 | (6,609,540) | 3,364,460
Hot-rolled coil steel contracts |  | 396,720 | (12,317,960) | 396,720
Hot-rolled coil steel contracts |  | 3,364,460 | (6,609,540) | 3,364,460
Hot-rolled coil steel contracts |  | (396,720) | 12,317,960 | (396,720)
Total |  | 396,720 | (12,317,960) | 396,720
Hotrolled Coil Futures Contracts 2 [Member] | Cost of Sales [Member] |  |  |  |
Hot-rolled coil steel contracts |  |  | 10,632,900 |
Hot-rolled coil steel contracts |  |  | (10,632,900) |
Total |  |  | 10,632,900 |
Hotrolled Coil Futures Contracts 2 [Member] | Designated as Hedging Instrument [Member] |  |  |  |
Gain recognized in OCI |  | 3,364,460 | (6,609,540) | 3,364,460
Hot-rolled coil steel contracts |  | 3,364,460 | $ (6,609,540) | $ 3,364,460
Hotrolled Coil Futures Contracts 2 [Member] | Designated as Hedging Instrument [Member] | Sales [Member] |  |  |  |
Hot-rolled coil steel contracts |  | (396,720) |  |
Hot-rolled coil steel contracts |  | 396,720 |  |
Total |  | $ (396,720) |  |

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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121577181&loc=SL110061190-113977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 + Details
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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