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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 12 Months Ended
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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% |

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