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Recently Issued Financial Accounting Standards - Additional Information (Detail) $ in Millions	9 Months Ended
	Mar. 31, 2018 USD ($)
ASU 2016-09
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Tax benefit would have recognized in absence of valuation allowance	$ 2.4
ASU 2014-09 | Military Related Contracts | Consolidated Revenues | Product Concentration Risk
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Percentage of consolidated revenues	10.00%

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- Definition

Tax benefit would have recognized in absence of valuation allowance.

+ References

No definition available.

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- Definition

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.

+ References

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=84177426&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=77997519&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
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
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- Definition

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