CUSTOMER CONCENTRATIONS (Details) - customer	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023	Jan. 31, 2024
Customer Concentration Risk | Accounts Receivable
Customer Concentrations
Number of customers			3		3
Customer Concentration Risk | Contract Asset
Customer Concentrations
Number of customers			5		2
Customer Concentration Risk | Major Customer One | Accounts Receivable
Customer Concentrations
Percentage of major customers or segments			25.00%		16.00%
Customer Concentration Risk | Major Customer One | Contract Asset
Customer Concentrations
Percentage of major customers or segments			16.00%		39.00%
Customer Concentration Risk | Major Customer Two | Accounts Receivable
Customer Concentrations
Percentage of major customers or segments			21.00%		14.00%
Customer Concentration Risk | Major Customer Two | Contract Asset
Customer Concentrations
Percentage of major customers or segments			16.00%		32.00%
Customer Concentration Risk | Major Customer Three | Accounts Receivable
Customer Concentrations
Percentage of major customers or segments			13.00%		14.00%
Customer Concentration Risk | Major Customer Three | Contract Asset
Customer Concentrations
Percentage of major customers or segments			13.00%
Customer Concentration Risk | Major Customer Four | Contract Asset
Customer Concentrations
Percentage of major customers or segments			11.00%
Customer Concentration Risk | Major Customer Five | Contract Asset
Customer Concentrations
Percentage of major customers or segments			11.00%
Power Industry Services | Product Concentration Risk | Revenue
Customer Concentrations
Percentage of major customers or segments	76.50%	74.50%	73.80%	71.60%
Power Industry Services | Customer Concentration Risk | Revenue
Customer Concentrations
Number of customers	3	3	3	3
Power Industry Services | Customer Concentration Risk | Major Customer One | Revenue
Customer Concentrations
Percentage of major customers or segments	27.00%	21.00%	28.00%	19.00%
Power Industry Services | Customer Concentration Risk | Major Customer Two | Revenue
Customer Concentrations
Percentage of major customers or segments	14.00%	20.00%	13.00%	17.00%
Power Industry Services | Customer Concentration Risk | Major Customer Three | Revenue
Customer Concentrations
Percentage of major customers or segments	12.00%	12.00%	10.00%	11.00%
Industrial Construction Services | Product Concentration Risk | Revenue
Customer Concentrations
Percentage of major customers or segments	21.90%	23.20%	24.30%	25.70%
Industrial Construction Services | Customer Concentration Risk | Major Customer One
Customer Concentrations
Number of customers				1
Industrial Construction Services | Customer Concentration Risk | Major Customer One | Revenue
Customer Concentrations
Percentage of major customers or segments				11.00%
Telecommunication Infrastructure Services | Product Concentration Risk | Revenue
Customer Concentrations
Percentage of major customers or segments	1.60%	2.30%	1.90%	2.70%