Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Contingency [Line Items]
Income tax (benefit) expense	$ (20,087)		$ 73,871		$ (81,606)	$ 303,922
Effective Income Tax Rate Reconciliation, Percent	51.80%				35.30%
U.S federal statutory rate, percent	35.00%		35.00%		35.00%	35.00%
Charge related to certain income tax matters	$ 1,000				$ 1,000
Benefit Related to Refund of Interest Paid on Tax Assessments					3,000
Write-off of unrealized deferred tax asset					$ 1,000	$ 5,000
Benefit related to certain income tax matters			$ 9,000			10,000
Benefit from a change in state tax rates			4,000			4,000
Newsday LLC
Income Tax Contingency [Line Items]
Adjustment to Deferred Income Tax Liability for Changes in Tax Basis		$ 1,000	$ 3,000	$ 91,000		88,000
Net Adjustment to Uncertain Tax Position, Current				$ 102,000		$ 102,000