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Note 11 - Retirement Plan (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Common Stock [Member] |  |
Stock Repurchase Program, Percentage of Shares Authorized to be Repurchased | 15.00% |
Friedman Industries, Inc. Employee's Retirement and 401(k) Plan [Member] |  |
Employee Service Vesting Period (Year) |  | 6 years
Defined Benefit Plan, Plan Assets, Contributions by Employer | $ 500 | $ 500
Defined Contribution Plan, Cost | $ 0 | $ 0

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