Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Goodwill, Subsequent Recognition of Deferred Tax Asset	$ 2,524
Finite-Lived Intangible Assets, Amortization Expense	$ 41,994	$ 30,828	$ 31,631
Percentage Of Hypothetical Decrease	20.00%
National Networks [Member]
Goodwill [Line Items]
Goodwill, Subsequent Recognition of Deferred Tax Asset	$ 2,524
International And Other [Member]
Goodwill [Line Items]
Goodwill, Subsequent Recognition of Deferred Tax Asset	$ 0
Hypothetical Decrease, Fair Value of Reporting Unit	9.00%