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CUSTOMER CONCENTRATIONS (Details) - customer | 12 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Accounts Receivable |  |  |
Customer Concentrations |  |  |
Number of customers | 3 | 3 |
Contract Asset |  |  |
Customer Concentrations |  |  |
Number of customers | 2 | 2 |
Major Customer One | Accounts Receivable |  |  |
Customer Concentrations |  |  |
Percentage of consolidated accounts receivable accounted by major customer | 26.00% | 24.00% |
Major Customer One | Contract Asset |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 64.00% | 51.00% |
Major Customer Two | Accounts Receivable |  |  |
Customer Concentrations |  |  |
Percentage of consolidated accounts receivable accounted by major customer | 11.00% | 21.00% |
Major Customer Two | Contract Asset |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 12.00% | 31.00% |
Major Customer Three | Accounts Receivable |  |  |
Customer Concentrations |  |  |
Percentage of consolidated accounts receivable accounted by major customer | 11.00% | 12.00% |
Power Services | Revenue |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 81.00% | 57.00% | 76.00%
Number of customers | 1 | 2 | 4
Power Services | Major Customer One | Revenue |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 67.00% | 22.00% | 16.00%
Power Services | Major Customer Two | Revenue |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments |  | 15.00% | 14.00%
Power Services | Major Customer Three | Revenue |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments |  |  | 12.00%
Power Services | Major Customer Four | Revenue |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments |  |  | 10.00%
Industry services | Revenue |  |  |
Customer Concentrations |  |  |
Percentage of major customers or segments | 17.00% | 40.00% | 21.00%

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