RESTRUCTURING CHARGES - Additional Information (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended				6 Months Ended	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Dec. 31, 2009	Jun. 30, 2011 Regulated Returns and Recall Management Services	Jun. 30, 2011 Reorganization of International Management Group Structure	Mar. 31, 2011 Reorganization of International Management Group Structure
Significant Acquisitions and Disposals [Line Items]
Restructuring cost	$ 195	$ 1,563	$ 453	$ 2,230			$ 100	$ 200	$ 100
Accrual balance related to the restructuring	$ 696		$ 696		$ 2,052	$ 672