Programs Comprising Ten Percent or more of Company's Revenue (Detail)	3 Months Ended			6 Months Ended
	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Percentage of revenue contributed from a single program	0.00%		53.00%	0.00%		41.00%
Joint Strike Fighter
Segment Reporting Information [Line Items]
Percentage of revenue contributed from a single program		[1]	21.00%		[1]	19.00%
Classified Airborne Radar Program
Segment Reporting Information [Line Items]
Percentage of revenue contributed from a single program		[1]	19.00%		[1]	11.00%
Aegiis
Segment Reporting Information [Line Items]
Percentage of revenue contributed from a single program		[1]	13.00%		[1]	11.00%

[1] Indicates that the amount is less than 10% of the Company's revenues for the respective periods.