RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES (LIABILITY CLASSIFICATION TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Reduction in force	$ 4,137	$ 22,632	$ 3,577
Facility exit charges	298	243	74
Customer Management Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	3,832	22,371	3,444
Facility exit charges	298	243	74
Customer Growth Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	43	201	133
Facility exit charges	0	0	0
Customer Technology Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	73	60	0
Facility exit charges	0	0	0
Customer Strategy Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	189	0	0
Facility exit charges	$ 0	$ 0	$ 0