Operating Segment, Geographic Information and Significant Customers - Programs Comprising Ten Percent or more of Company's Revenue (Detail) (Sales Revenue, Net [Member])	3 Months Ended
	Sep. 30, 2014
Segment Reporting Information [Line Items]
Concentration risk, percentage	57.00%
SEWIP Program [Member] | Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	18.00%
Patriot Program [Member] | Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	18.00%
Aegis Program [Member] | Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	11.00%
F-35 Program [Member] | Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage	10.00%