DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details) $ in Millions	3 Months Ended
	Apr. 30, 2016 USD ($) project	Apr. 30, 2015
Liquidated Damages | Pending Litigation
Description of the Business
The number of projects where the Company may be subject to liquidated damages claims | project	1
Potential amount of damages sought by plaintiff at end of contract | $	$ 12.9
Power Industry Services | Minimum
Description of the Business
Revenue recognition period	3 months
Power Industry Services | Maximum
Description of the Business
Revenue recognition period	3 years
GPS
Description of the Business
Consolidated revenues by subsidiaries	79.00%	97.00%