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 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: 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=73719730&loc=d3e13531-108611

Reference 3: 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=64851502&loc=d3e6404-108592

Reference 4: 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=73719730&loc=d3e13537-108611

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Operating Segment, Geographic Information and Significant Customers - Additional Information (Detail) - Sales Revenue, Net [Member]	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Concentration risk, percent	22.00%	46.00%	15.00%
SEWIP Program [Member] \| Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percent	12.00%
Aegis Program [Member] \| Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percent	10.00%	12.00%	15.00%
F-35 Program [Member] \| Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percent		16.00%
Patriot Program [Member] \| Program Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percent		18.00%