Significant Customers (Details) (USD $)			3 Months Ended		9 Months Ended
	Nov. 30, 2011 Minimum	Nov. 30, 2011 Maximum	Sep. 30, 2012 U.S. Government Kratos Government Solutions	Sep. 25, 2011 U.S. Government Kratos Government Solutions	Sep. 30, 2012 U.S. Government Kratos Government Solutions	Sep. 25, 2011 U.S. Government Kratos Government Solutions
Revenue, Major Customer [Line Items]
Sales to the U.S. Government - amount			$ 162,900,000	$ 157,900,000	$ 443,800,000	$ 374,400,000
Sales to the U.S. Government - percentage of total revenue			59.00%	75.00%	63.00%	74.00%
Amount of budget deficit reductions mandated by The Budget Control Act of 2011	$ 1,200,000,000,000	$ 1,500,000,000,000