BUSINESS REORGANIZATION EXPENSES EMPLOYMENT TERMINATION BENEFITS (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) position	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	$ 5,828	$ 3,789	$ 5,440
Hudson Americas
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	1,108	94	448
Hudson Asia Pacific
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	669	1,322	989
Hudson Europe
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	2,883	1,407	3,214
Corporate
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	1,168	966	789
One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	2,109	2,765	3,885
One-time Termination Benefits | Hudson Americas
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	350	3	470
One-time Termination Benefits | Hudson Asia Pacific
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	(2)	510	505
One-time Termination Benefits | Hudson Europe
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	792	1,285	2,120
One-time Termination Benefits | Corporate
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	$ 969	967	790
2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | position	63
Business reorganization expenses	$ 2,060	$ 0	$ 0