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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]      
Acquisition of intangibles   $ 11,554 $ 0
Goodwill impairment $ 29,000    
Intangible asset impairment $ 6,300    
Cable and Satellite Carriage Rights      
Finite-Lived Intangible Assets [Line Items]      
Acquisition of intangibles   $ 11,600