Segment Information Reportable Segment Information (Total Assets, Capital Expenditures, Depreciation And Amortization) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	$ 2,102,552		$ 2,062,328
Property, Plant and Equipment, Additions	9,660	$ 4,321
Depreciation, Depletion and Amortization, Nonproduction	39,322	27,174
Business Cloud Services Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	971,639		911,327
Property, Plant and Equipment, Additions	1,456	1,121
Depreciation, Depletion and Amortization, Nonproduction	16,764	17,502
Digital Media Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	1,114,708		1,124,535
Property, Plant and Equipment, Additions	8,204	3,200
Depreciation, Depletion and Amortization, Nonproduction	22,558	9,672
Operating Segments [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	2,086,347		2,035,862
Property, Plant and Equipment, Additions	9,660	4,321
Depreciation, Depletion and Amortization, Nonproduction	39,322	27,174
Corporate [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	16,205		$ 26,466
Property, Plant and Equipment, Additions	0	0
Depreciation, Depletion and Amortization, Nonproduction	$ 0	$ 0