Assets Held for Sale and Discontinued Operations (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets held for sale	$ 102,511	$ 101,266
Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property and equipment	5,488	5,526
Operating lease right-of-use assets	9,579	10,448
Other assets	6,549	2,029
Total current liabilities	19,708	22,727
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current liabilities	79,613	$ 0
WPIX | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property and equipment	16,721
Goodwill	24,997
Other intangible assets	37,120
Operating lease right-of-use assets	71,071
Total current liabilities	6,326
Other assets	5,714
Total assets held for sale	155,623
Total current liabilities	79,613
Operating lease liabilities	72,231
Other liabilities	1,056
Net assets held for sale	$ 76,010