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CUSTOMER CONCENTRATIONS (Details) - customer | 12 Months Ended
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Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2020
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |
Customer Concentrations |  |  |
Number of customers | 3 | 3 |
Customer Concentration Risk [Member] | Contract Asset |  |  |
Customer Concentrations |  |  |
Number of customers | 2 | 2 |
Customer Concentration Risk [Member] | Major Customer One [Member] | Accounts Receivable [Member] |  |  |
Customer Concentrations |  |  |
Percentage of consolidated accounts receivable accounted by major customer | 22.00% | 26.00% |
Customer Concentration Risk [Member] | Major Customer One [Member] | Contract Asset |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 31.00% | 64.00% |
Customer Concentration Risk [Member] | Major Customer Two [Member] | Accounts Receivable [Member] |  |  |
Customer Concentrations |  |  |
Percentage of consolidated accounts receivable accounted by major customer | 15.00% | 11.00% |
Customer Concentration Risk [Member] | Major Customer Two [Member] | Contract Asset |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 13.00% | 12.00% |
Customer Concentration Risk [Member] | Major Customer Three [Member] | Accounts Receivable [Member] |  |  |
Customer Concentrations |  |  |
Percentage of consolidated accounts receivable accounted by major customer | 12.00% | 11.00% |
Power Industry Services [Member] | Product Concentration Risk [Member] | Revenue [Member] |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 78.00% | 81.00% | 57.00%
Power Industry Services [Member] | Customer Concentration Risk [Member] | Revenue [Member] |  |  |
Customer Concentrations |  |  |
Number of customers | 1 | 1 | 2
Power Industry Services [Member] | Customer Concentration Risk [Member] | Major Customer One [Member] | Revenue [Member] |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 57.00% | 67.00% | 22.00%
Power Industry Services [Member] | Customer Concentration Risk [Member] | Major Customer Two [Member] | Revenue [Member] |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments |  |  | 15.00%
Industry services | Product Concentration Risk [Member] | Revenue [Member] |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 19.00% | 17.00% | 40.00%

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