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Note I - Fair Value Measurements - Recurring Fair Value Measurements (Details) - Fair Value, Recurring [Member] - USD ($) | Dec. 31, 2021 | Mar. 31, 2021
--- | --- | ---
Commodity futures – financial assets, net | $ 2,431,240 | $ (7,407,400)
Total | 2,431,240 | (7,407,400)
Fair Value, Inputs, Level 1 [Member] |  |
Commodity futures – financial assets, net | 2,431,240 | (7,407,400)
Total | $ 2,431,240 | $ (7,407,400)

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