Segment Information Reportable Segment Information (Reconciliation of Total Segment Operating Income to Consolidated Operating Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Total revenues	$ 127,788	$ 93,246	$ 382,766	$ 269,363
Operating Income (Loss)	39,308	42,277	124,902	119,914
Global Operating Costs	7,449	6,589	22,283	20,386
Business Cloud Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	94,391	93,246	293,898	269,363
Direct Costs By Segment	48,504	44,379	143,075	129,063
Operating Income (Loss)	45,886	48,866	150,823	140,300
Digital Media Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	33,522	0	89,207	0
Direct Costs By Segment	32,652	0	92,845	0
Operating Income (Loss)	871	0	(3,638)	0
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total revenues	(125)	0	(339)	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 46,757	$ 48,866	$ 147,185	$ 140,300