SEGMENT INFORMATION (SEGMENT FINANCIALS) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Gross Revenue	$ 289,321	$ 294,202
Intersegment Sales	(938)	(1,548)
Net Revenue	288,383	292,654
Depreciation and amortization	10,555	10,116
Income (Loss) from Operations	22,998	18,750
Capital Expenditures	4,105	6,484
Total Assets	847,495		847,173
Goodwill	95,191		94,679
Customer Management Services [Member]
Segment Reporting Information [Line Items]
Gross Revenue	222,889	234,876
Intersegment Sales	(307)	0
Net Revenue	222,582	234,876
Depreciation and amortization	7,862	8,160
Income (Loss) from Operations	20,731	16,707
Capital Expenditures	2,286	5,262
Total Assets	588,076		588,627
Goodwill	20,322		20,288
Customer Growth Services [Member]
Segment Reporting Information [Line Items]
Gross Revenue	22,856	22,764
Intersegment Sales	0	0
Net Revenue	22,856	22,764
Depreciation and amortization	697	800
Income (Loss) from Operations	1,276	(2,130)
Capital Expenditures	316	546
Total Assets	54,906		54,164
Goodwill	24,439		24,439
Customer Technology Services [Member]
Segment Reporting Information [Line Items]
Gross Revenue	33,646	26,199
Intersegment Sales	(84)	(647)
Net Revenue	33,562	25,552
Depreciation and amortization	1,516	805
Income (Loss) from Operations	2,898	3,679
Capital Expenditures	1,328	539
Total Assets	149,416		148,043
Goodwill	39,069		38,591
Customer Strategy Services [Member]
Segment Reporting Information [Line Items]
Gross Revenue	9,930	10,363
Intersegment Sales	(547)	(901)
Net Revenue	9,383	9,462
Depreciation and amortization	480	351
Income (Loss) from Operations	(1,907)	494
Capital Expenditures	175	137
Total Assets	55,097		56,339
Goodwill	$ 11,361		$ 11,361