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CUSTOMER CONCENTRATIONS (Details) - customer	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Jan. 31, 2023
Customer Concentration Risk | Accounts Receivable
Customer Concentrations
Number of customers			2		3
Customer Concentration Risk | Contract Asset
Customer Concentrations
Number of customers			2		1
Customer Concentration Risk | Major Customer One | Accounts Receivable
Customer Concentrations
Percentage of major customers or segments			42.00%		36.00%
Customer Concentration Risk | Major Customer One | Contract Asset
Customer Concentrations
Percentage of major customers or segments			30.00%		70.00%
Customer Concentration Risk | Major Customer Two | Accounts Receivable
Customer Concentrations
Percentage of major customers or segments			14.00%		12.00%
Customer Concentration Risk | Major Customer Two | Contract Asset
Customer Concentrations
Percentage of major customers or segments			14.00%
Customer Concentration Risk | Major Customer Three | Accounts Receivable
Customer Concentrations
Percentage of major customers or segments					12.00%
Power Industry Services | Product Concentration Risk | Revenue
Customer Concentrations
Percentage of major customers or segments	74.00%	77.00%	73.00%	76.00%
Power Industry Services | Customer Concentration Risk | Revenue
Customer Concentrations
Number of customers	3	4	3	1
Power Industry Services | Customer Concentration Risk | Major Customer One | Revenue
Customer Concentrations
Percentage of major customers or segments	23.00%	33.00%	19.00%	42.00%
Power Industry Services | Customer Concentration Risk | Major Customer Two | Revenue
Customer Concentrations
Percentage of major customers or segments	20.00%	12.00%	17.00%
Power Industry Services | Customer Concentration Risk | Major Customer Three | Revenue
Customer Concentrations
Percentage of major customers or segments	17.00%	12.00%	14.00%
Power Industry Services | Customer Concentration Risk | Major Customer Four | Revenue
Customer Concentrations
Percentage of major customers or segments		12.00%
Industrial Construction Services | Product Concentration Risk | Revenue
Customer Concentrations
Percentage of major customers or segments	23.00%	19.00%	25.00%	20.00%

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
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-Topic 280
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