BUSINESS REORGANIZATION EXPENSES LEASE TERMINATION PAYMENTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	$ 7,782	$ 720	$ 1,694
Hudson Americas
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	1,007	0	307
Hudson Asia Pacific
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	1,285	0	(15)
Hudson Europe
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	5,131	720	1,402
Corporate
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	359	0	0
Lease Termination
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	3,283	708	1,464
Lease Termination | Hudson Americas
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	179	0	134
Lease Termination | Hudson Asia Pacific
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	613	0	(18)
Lease Termination | Hudson Europe
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	2,491	708	1,348
Lease Termination | Corporate
Restructuring Cost and Reserve [Line Items]
Business reorganization expenses	$ 0	$ 0	$ 0