GOODWILL (GOODWILL ROLLFORWARD) (DETAILS) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Beginning balance, goodwill		$ 128,705	$ 102,743
Acquisitions / Adjustments			27,835
Acquisitions / Adjustments		(3,600)
Impairments	$ 2,900	(7,725)
Effect of Foreign Currency		(3,197)	(1,873)
Ending balance, goodwill	114,183	114,183	128,705
Customer Management Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill		25,871	19,819
Acquisitions / Adjustments			6,358
Acquisitions / Adjustments		0
Impairments		(1,769)
Effect of Foreign Currency		(2,093)	(306)
Ending balance, goodwill	22,009	22,009	25,871
Customer Growth Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill		30,395	30,128
Acquisitions / Adjustments			267
Acquisitions / Adjustments		0
Impairments		(5,956)
Ending balance, goodwill	24,439	24,439	30,395
Customer Technology Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill		42,709	42,709
Acquisitions / Adjustments			0
Acquisitions / Adjustments		0
Ending balance, goodwill	42,709	42,709	42,709
Customer Strategy Services [Member]
Goodwill [Line Items]
Beginning balance, goodwill		29,730	10,087
Acquisitions / Adjustments			21,210
Acquisitions / Adjustments		(3,600)
Effect of Foreign Currency		(1,104)	(1,567)
Ending balance, goodwill	$ 25,026	$ 25,026	$ 29,730