Segment Information (Narrative) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) segment customer	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment									2
Revenues, net	$ 780,275	$ 654,015	$ 646,291	$ 734,375	$ 785,204	$ 718,597	$ 772,299	$ 784,221	$ 2,814,956	$ 3,060,321	$ 2,971,929
SVOD Services [Member]
Segment Reporting Information [Line Items]
Revenues, net									$ 176,700	$ 95,300	$ 20,200
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member]
Segment Reporting Information [Line Items]
Number of customers | customer									1
Concentration risk, percentage										10.00%	11.00%