Operating Segment, Geographic Information and Significant Customers - Customers Comprising Ten Percent or more Revenues (Detail) (Customer Concentration Risk [Member], Revenues)	12 Months Ended
Jun. 30, 2014 customer	Jun. 30, 2013	Jun. 30, 2012
Revenue, Major Customer [Line Items]
Concentration risk, percent	43.00%	38.00%	56.00%
Concentration risk, number	3
Lockheed Martin Corporation
Revenue, Major Customer [Line Items]
Concentration risk, percent	18.00%	17.00%	15.00%
Raytheon Company
Revenue, Major Customer [Line Items]
Concentration risk, percent	13.00%	10.00%	23.00%
Northrop Grumman Corporation
Revenue, Major Customer [Line Items]
Concentration risk, percent	12.00%	11.00%	18.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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