Business Acquisition (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Business Acquisition Contributed Total Revenue	$ 9,400
Total consideration of transaction, net of cash acquired	58,362
Goodwill, Purchase Accounting Adjustments	(2,230)
Goodwill, Acquired During Period	31,253
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount	23,600
Business Cloud Services Segment [Member]
Goodwill, Purchase Accounting Adjustments	766
Goodwill, Acquired During Period	31,253
Digital Media Segment [Member]
Goodwill, Purchase Accounting Adjustments	1,464
Goodwill, Acquired During Period	$ 0