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RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES (NARRATIVE) (DETAILS) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Customer Management Services
Jun. 30, 2011
Customer Management Services
Jun. 30, 2012
Customer Growth Services
Asset Impairment [Line Items]          
Impairment of leasehold improvements $ 1,000,000 $ 0 $ 1,000,000 $ 200,000  
Impairment of trade name         $ 1,800,000