Business Acquisition (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Business Acquisition Contributed Total Revenue	$ 4,700
Total consideration of transaction, net of cash acquired	60,602
Purchase accounting adjustments (1)	(1,451)
Goodwill, Acquired During Period	37,397
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount	33,200
Digital Media Segment [Member]
Goodwill, Acquired During Period	$ 0