DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Jun. 30, 2016	Oct. 31, 2016	Oct. 31, 2015
Power Industry Services
Description of the Business
Unapproved change orders contract amount		$ 3.3
Potential liquidated damages	$ 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		83.00%	94.00%