Customers Comprising Ten Percent or more Revenues (Detail)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Revenue, Major Customer [Line Items]
Revenue from Customers	54.00%	51.00%	37.00%
ACS | Raytheon Company
Revenue, Major Customer [Line Items]
Revenue from Customers	22.00%	17.00%	20.00%
ACS | Northrop Grumman Corporation
Revenue, Major Customer [Line Items]
Revenue from Customers	17.00%	21.00%
ACS | Lockheed Martin Corporation
Revenue, Major Customer [Line Items]
Revenue from Customers	15.00%	13.00%	17.00%