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v3.25.1

Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2025
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
|  | March 31, |
|  | 2025 |  |  | 2024 |
Flat-Roll raw material |  | $ | 85,865 |  |  | $ | 85,483 |
Flat-Roll finished goods |  |  | 15,737 |  |  |  | 17,030 |
Tubular raw material |  |  | 7,055 |  |  |  | 4,185 |
Tubular finished goods |  |  | 5,032 |  |  |  | 9,106 |
|  | $ | 113,689 |  |  | $ | 115,804 |
Property, Plant and Equipment [Table Text Block] |
Buildings (in years) |  |  | 15 to 40 |
Machinery and equipment (in years) |  |  | 10 to 30 |
Land improvements (in years) |  |  | 5 to 15 |
Furniture (in years) |  |  | 5 to 10 |
Equipment - Technology (in years) |  |  | 2 to 5 |
Buildings - Small Remodel/Furnace/HVAC (in years) |  |  | 10 to 15 |

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