Segment Information Reportable Segment Information (Total Assets, Capital Expenditures, Depreciation And Amortization) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	$ 1,793,151		$ 1,793,151		$ 1,783,719
Property, Plant and Equipment, Additions			9,186	$ 6,955
Depreciation, Depletion and Amortization, Nonproduction	31,059	$ 21,894	58,233	43,181
Business Cloud Services Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	1,067,436		1,067,436		1,017,676
Property, Plant and Equipment, Additions			2,087	3,477
Depreciation, Depletion and Amortization, Nonproduction	21,251	14,758	38,752	28,772
Digital Media Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	403,549		403,549		427,647
Property, Plant and Equipment, Additions			7,099	3,296
Depreciation, Depletion and Amortization, Nonproduction	9,808	6,944	19,481	14,024
Operating Segments [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	1,470,985		1,470,985		1,445,323
Property, Plant and Equipment, Additions			9,186	6,773
Depreciation, Depletion and Amortization, Nonproduction	31,059	21,702	58,233	42,796
Corporate [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	322,166		322,166		$ 338,396
Property, Plant and Equipment, Additions			0	182
Depreciation, Depletion and Amortization, Nonproduction	$ 0	$ 192	$ 0	$ 385