Subsequent Events (Details) (Subsequent Event [Member], USD $) In Millions, unless otherwise specified	Aug. 05, 2013
Subsequent Event [Line Items]
Number of days following closing to change corporate name	60 days
Sale of Publishing Subsidiaries [Member]
Subsequent Event [Line Items]
Additional amount to be transferred to Purchaser related to pension	$ 50
Letter Agreement aggregate purchase price for divestiture of business	250
Target cash amount related to purchase price adjustments	$ 8.5
Number of days from Letter Agreement to execute definitive Securities Purchase Agreement	60 days