RESTRUCTURING AND INTEGRATION CHARGES AND IMPAIRMENT LOSSES (LIABILITY CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Reduction in force	$ 204	$ 43
Facility exit charges	645	126
Restructuring charges, net	849	169
Customer Management Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	153	(36)
Facility exit charges	645	42
Customer Technology Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force		79
Facility exit charges		$ 84
Customer Strategy Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	$ 51