Geographic Information Reportable Segment Information (Reconciliation of Total Segment Operating Income to Consolidated Operating Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Total revenues	$ 113,617	$ 86,652
Segment Reporting Information, Intersegment Revenue	(29)	0
Operating Income (Loss)	32,987	37,610
Global Operating Costs	7,674	6,517
Business Cloud Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	90,739	86,652
Direct Costs By Segment	46,081	42,525
Operating Income (Loss)	44,657	44,127
Digital Media Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	22,907	0
Direct Costs By Segment	26,903	0
Operating Income (Loss)	(3,996)	0
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 40,661	$ 44,127