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RESTRUCTURING AND INTEGRATION CHARGES AND IMPAIRMENT LOSSES (LIABILITY CLASSIFICATION TABLE) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]    
Reduction in force $ 462 $ 204
Facility exit charges 499 645
Restructuring charges, net 961 849
Customer Strategy Services [Member]    
Restructuring Cost and Reserve [Line Items]    
Reduction in force   51
Customer Management Services [Member]    
Restructuring Cost and Reserve [Line Items]    
Reduction in force 462 153
Facility exit charges $ 499 $ 645