COMMITMENTS (Details) lb in Millions, gal in Millions, bu in Millions	12 Months Ended
	Jan. 31, 2021 USD ($) MMBTU T lb gal bu	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
COMMITMENTS (Details) [Line Items]
Forward Purchase Contracts, Quantity (in US Bushels) | bu	6.4
Quantity Of Natural Gas Under Sales Commitment (in Millions of British Thermal Units) | MMBTU	1,428,000
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	38.6
Quantity of Distillers Grains Under Sales Commitment (in US Tons) | T	73,000
Quantity of Non-food Grade Corn Oil Under Sales Commitments (in Pounds) | lb	21.6
One Earth Energy And Nu Gen Energy [Member] | Natural Gas Pipeline [Member]
COMMITMENTS (Details) [Line Items]
Operating Leases, Rent Expense, Net	$ 351,000	$ 358,000	$ 438,000
One Earth Energy And Nu Gen Energy [Member] | Distillers Grains Marketing Services [Member]
COMMITMENTS (Details) [Line Items]
Marketing Expense	$ 841,000	936,000	1,250,000
One Earth Energy [Member] | Natural Gas Pipeline [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
One Earth Energy [Member] | Natural Gas Pipeline [Member] | Renewal [Member]
COMMITMENTS (Details) [Line Items]
Lease Expiration Period	15 years
Installment amount	$ 29,250
Refined Coal [Member]
COMMITMENTS (Details) [Line Items]
Fees Incurred By Subsidiary	$ 2,500,000	$ 4,231,000	$ 9,927,000