Pending Merger Transaction with Extreme Reach (Details) (USD $)			0 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Aug. 12, 2013 Forecast	Aug. 12, 2013 NewCo Forecast	Aug. 12, 2013 Television Business Forecast
Pending merger transaction with Extreme Reach, Inc.
Cash proceeds from sale of business					$ 485,000,000
Amount of outstanding debt to be retired using proceeds of pending sale of business	386,361,000	453,918,000
Per share distribution to shareholders (in dollars per share)			$ 3
Value of preferred stock to be purchased, if requested to facilitate closing of the transaction				45,000,000
Price of preferred stock to be purchased, if requested to facilitate closing of the transaction				40,000,000
Cash to be received at closing, if purchase of preferred stock is not requested				$ 5,000,000