DESCRIPTION OF BUSINESS (Details)	12 Months Ended
	Dec. 31, 2016 employees Country segments	Dec. 31, 2016 employees Country Segment
Schedule of Segment Reporting Information By Segment, Gross Margin [Line Items]
Number of countries in which entity operates | Country	13	13
Number of reportable segments	3	3
Minimum
Schedule of Segment Reporting Information By Segment, Gross Margin [Line Items]
Number of employees | employees	1,600	1,600