SEGMENT INFORMATION (SEGMENT FINANCIALS) (DETAILS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Gross Revenue	$ 289,735	$ 293,636	$ 584,221	$ 574,615
Intersegment Sales	(937)	0	(2,769)	0
Net Revenue	288,798	293,636	581,452	574,615
Depreciation & Amortization	10,229	11,423	20,345	23,021
Income (Loss) from Operations	6,446	24,629	25,196	46,119
Capital Expenditures	10,994	8,492	17,478	12,362
Total Assets	784,952		784,952		746,978
Goodwill	72,057		72,057		70,844
Customer Management Services
Segment Reporting Information [Line Items]
Gross Revenue	229,401	248,207	464,277	494,280
Intersegment Sales	0	0	0	0
Net Revenue	229,401	248,207	464,277	494,280
Depreciation & Amortization	5,890	7,305	12,030	15,736
Income (Loss) from Operations	28,563	49,588	74,269	97,839
Capital Expenditures	7,336	4,958	12,982	7,079
Total Assets	496,401		496,401		479,818
Goodwill	20,228		20,228		20,594
Customer Growth Services
Segment Reporting Information [Line Items]
Gross Revenue	24,409	23,483	47,173	45,626
Intersegment Sales	0	0	0	0
Net Revenue	24,409	23,483	47,173	45,626
Depreciation & Amortization	631	766	1,196	1,552
Income (Loss) from Operations	4,212	4,594	5,291	7,576
Capital Expenditures	524	94	893	200
Total Assets	46,241		46,241		50,950
Goodwill	24,439		24,439		24,439
Customer Technology Services
Segment Reporting Information [Line Items]
Gross Revenue	25,578	11,660	52,062	16,317
Intersegment Sales	(622)	0	(1,553)	0
Net Revenue	24,956	11,660	50,509	16,317
Depreciation & Amortization	678	448	1,465	517
Income (Loss) from Operations	4,103	3,156	7,808	5,868
Capital Expenditures	375	45	701	115
Total Assets	77,865		77,865		70,745
Goodwill	19,648		19,648		18,516
Customer Strategy Services
Segment Reporting Information [Line Items]
Gross Revenue	10,347	10,286	20,709	18,392
Intersegment Sales	(315)	0	(1,216)	0
Net Revenue	10,032	10,286	19,493	18,392
Depreciation & Amortization	341	309	690	607
Income (Loss) from Operations	316	1,309	847	1,773
Capital Expenditures	18	0	84	138
Total Assets	50,339		50,339		42,882
Goodwill	7,742		7,742		7,295
Reportable Segments
Segment Reporting Information [Line Items]
Gross Revenue	289,735	293,636	584,221	574,615
Intersegment Sales	(937)	0	(2,769)	0
Net Revenue	288,798	293,636	581,452	574,615
Depreciation & Amortization	7,540	8,828	15,381	18,412
Income (Loss) from Operations	37,194	58,647	88,215	113,056
Corporate
Segment Reporting Information [Line Items]
Gross Revenue	0	0	0	0
Intersegment Sales	0	0	0	0
Net Revenue	0	0	0	0
Depreciation & Amortization	2,689	2,595	4,964	4,609
Income (Loss) from Operations	(30,748)	(34,018)	(63,019)	(66,937)
Capital Expenditures	2,741	3,395	2,818	4,830
Total Assets	$ 114,106		$ 114,106		$ 102,583