SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Jan. 31, 2021 USD ($) shares	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number Of Operating Entities	5
Number of Reportable Segments	2
Inventory Write-down (in Dollars)	$ 1,000,000.0	$ 1,300,000
Regulatory Depreciation and Amortization, Policy [Policy Text Block]	Depreciation is computed using the straight-line method.
Depreciation (in Dollars)	$ 20,900,000	23,000,000.0	$ 24,800,000
Selling, General and Administrative Expense (in Dollars)	17,661,000	19,258,000	20,551,000
Assets (in Dollars)	$ 479,345,000	500,502,000
Common Stock, Capital Shares Reserved for Future Issuance (in Shares) | shares	550,000
Contracts Not Accounted For Under Normal Purchases and Normal Sales
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Assets (in Dollars)	$ 2,100,000
Liabilities (in Dollars)		200,000
Cargo and Freight [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Selling, General and Administrative Expense (in Dollars)	$ 3,482,000	4,086,000	$ 1,154,000
Consolidated Entities [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number Of Operating Entities	4
Equity Method Investee [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number Of Operating Entities	1
Cost of Sales [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Maximum Percentage of Equity Ownership Interest Which May be Considered for Equity Method of Accounting	20.00%
Minimum [Member] | Building and Building Improvements [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5
Minimum [Member] | Fixtures And Equipment [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	2
Maximum [Member] | Building and Building Improvements [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	40 years
Maximum [Member] | Fixtures And Equipment [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	20 years
Refined Coal [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number of Reportable Segments	2
Assets (in Dollars)	$ 2,861,000	6,101,000
Refined Coal [Member] | Majority-Owned Subsidiary, Unconsolidated [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number of Reportable Segments	1,000,000
Ethanol [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Number of Reportable Segments	1
Assets (in Dollars)	$ 397,281,000	$ 408,746,000
Customer Concentration Risk [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Number of Customers	7	8	6
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage	89.00%	85.00%	85.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Concentration Risk, Percentage	54.00%	88.00%