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v3.22.2

Note 1 - Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) | Mar. 31, 2022 USD ($) T | Mar. 31, 2021 USD ($) | Mar. 31, 2021 USD ($)
Accounts Receivable, Allowance for Credit Loss, Ending Balance |  | $ 84,819 | $ 17,834 | $ 17,834
Inventory Write-down | $ 274,093 | 0 | 274,093 |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total |  | 213,000 | 8,000 |
Income Taxes Paid, Net, Total |  | 8,347,000 | 10,000 |
Proceeds from Income Tax Refunds |  | 423,000 |  |
Construction in Progress, Gross |  | 15,925,306 | 9,614 | 9,614
Capital Expenditures Incurred but Not yet Paid |  | $ 8,081,524 |  |
Unrecognized Tax Benefits, Ending Balance |  |  | 0 | 0
Inventory, Material Weight (US Ton) | T |  | 1,200 |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 285,234,752 | 126,102,533 | 126,102,533
Revenue from Contract with Customer, Including Assessed Tax |  | 28,264,592 |  | 15,725,395
Revenue from Contract with Customer, Including Assessed Tax |  | $ 12,467,366 |  | 7,835,184
Customer Concentration Risk [Member] | Revenue, Product and Service Benchmark [Member] | O'Neal Steel [Member] |  |  |  |
Concentration Risk, Percentage |  | 11.00% |  |
Tubular [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 54,796,603 | 30,837,978 |
Mill Reject Pipe [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 10,312,000 | 5,284,000 |
Mill Reject Pipe [Member] | Tubular [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 10,311,951 | 5,283,645 |
Revenue from Contract with Customer, Including Assessed Tax |  | 3,824,000 | 1,313,000 |
Revenue from Contract with Customer, Including Assessed Tax |  | 1,280,000 | 802,000 |
Life Insurance Policies Transfer [Member] |  |  |  |
Liability, Other Retirement Benefits |  |  | $ 108,609 | $ 108,609
Life Insurance Policies Transfer [Member] |  |  |  |
Liability, Other Retirement Benefits |  | $ 119,591 |  |

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