GOODWILL (GOODWILL ROLLFORWARD) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Goodwill [Line Items]
Beginning balance, goodwill	$ 102,743
Acquisitions	7,679
Impairments	0
Effect of Foreign Currency	131
Ending balance, goodwill	110,553
Customer Management Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill	19,819
Acquisitions	7,329
Impairments	0
Effect of Foreign Currency	131
Ending balance, goodwill	27,279
Customer Growth Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill	30,128
Acquisitions	0
Impairments	0
Effect of Foreign Currency	0
Ending balance, goodwill	30,128
Customer Technology Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill	42,709
Acquisitions	0
Impairments	0
Effect of Foreign Currency	0
Ending balance, goodwill	42,709
Customer Strategy Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill	10,087
Acquisitions	350
Impairments	0
Effect of Foreign Currency	0
Ending balance, goodwill	$ 10,437