Restructuring (Expense by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 2,631	$ 5,619	$ 5,941	$ 6,772
National Networks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	100	2,462	817	2,462
International And Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 2,531	$ 3,157	$ 5,124	$ 4,310