Property and Equipment (Property, Plant, Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment	$ 511,924	$ 517,127
Accumulated depreciation and amortization	(286,133)	(261,082)
Property and equipment, net	225,791	256,045
Program, service and test equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 279,067	251,925
Estimated Useful  Lives	5 years
Satellite equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 41,134	41,228
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	13,933	21,024
Transmission equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 30,925	30,539
Estimated Useful  Lives	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 146,865	$ 172,411
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated Useful  Lives	3 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated Useful  Lives	8 years