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COMMITMENTS (Details) lb in Millions, gal in Millions, bu in Millions	12 Months Ended
	Jan. 31, 2022 USD ($) MMBTU T lb gal bu	Jan. 31, 2021 USD ($)	Jan. 31, 2020 USD ($)
COMMITMENTS (Details) [Line Items]
Forward Purchase Contracts, Quantity (in US Bushels) \| bu	19.3
Quantity Of Natural Gas Under Sales Commitment (in Millions of British Thermal Units) \| MMBTU	1.8
Operating Leases, Future Minimum Payments Due		$ 13,308,000
One Earth Energy And Nu Gen Energy [Member]
COMMITMENTS (Details) [Line Items]
Quantity of Ethanol under Sales Commitment (in US Gallons) \| gal	47.7
Quantity of Distillers Grains Under Sales Commitment (in US Tons) \| T	97,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments (in Pounds) \| lb	14.5
Refined Coal [Member]
COMMITMENTS (Details) [Line Items]
Fees Incurred By Subsidiary	$ 5,404,000	2,500,000	$ 4,231,000
Natural Gas Pipeline [Member] \| One Earth Energy And Nu Gen Energy [Member]
COMMITMENTS (Details) [Line Items]
Operating Leases, Rent Expense, Net	$ 351,000	351,000	358,000
Natural Gas Pipeline [Member] \| One Earth Energy [Member]
COMMITMENTS (Details) [Line Items]
Lease Expiration Period	10 years
Operating Leases, Future Minimum Payments Due	$ 4,380,000
Number of installments payable	120
Installment amount	$ 36,500
Natural Gas Pipeline [Member] \| Renewal [Member] \| One Earth Energy [Member]
COMMITMENTS (Details) [Line Items]
Lease Expiration Period	15 years
Installment amount	$ 29,250
Distillers Grains Marketing Services [Member] \| One Earth Energy And Nu Gen Energy [Member]
COMMITMENTS (Details) [Line Items]
Marketing Expense	$ 1,190,000	$ 841,000	$ 936,000