Segment Information Reportable Segment Information (Reconciliation of Total Segment Operating Income to Consolidated Operating Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 520,801	$ 371,396	$ 330,159
Direct Costs By Segment	315,582	181,147	165,833
Operating Income (Loss)	175,423	162,162	135,950
Global Operating Costs	30,245	28,087	28,376
Business Cloud Services Segment [Member]
Segment Reporting Information [Line Items]
Revenues	390,104	361,684	330,159
Direct Costs By Segment	191,169	174,324	165,833
Operating Income (Loss)		187,360	164,326
Digital Media Segment [Member]
Segment Reporting Information [Line Items]
Revenues	131,146	9,712	0
Direct Costs By Segment	124,413	6,823	0
Operating Income (Loss)		2,889	0
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(449)	0	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 205,668	$ 190,249	$ 164,326