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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Total revenues	$ 144,744	$ 141,361	$ 278,868	$ 254,978
Operating Income (Loss)	44,838	52,607	86,422	85,594
Global Operating Costs	7,085	7,159	15,371	14,833
Business Cloud Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	106,523	108,768	207,353	199,507
Direct Costs By Segment	60,156	48,489	115,768	94,571
Operating Income (Loss)	46,367	60,279	91,585	104,936
Digital Media Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	38,274	32,778	71,642	55,685
Direct Costs By Segment	32,717	33,290	61,433	60,193
Operating Income (Loss)	5,556	(513)	10,208	(4,509)
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Total revenues	(53)	(185)	(127)	(214)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 51,923	$ 59,766	$ 101,793	$ 100,427