Goodwill, Other Intangible Assets and Intangible Liabilities - Intangible Liabilities (Details) - Television and Entertainment - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017
Finite-Lived Intangible Liabilities [Roll Forward]
Amortization	$ (11,640)
Balance sheet reclassifications	(2,120)
Contract intangible liability, net		$ 0
Broadcast rights intangible liabilities
Finite-Lived Intangible Liabilities [Roll Forward]
Contract intangible liability, net	$ 0