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Basis of Presentation and New Accounting Pronouncements - Additional Information (Detail)	Jun. 30, 2015
Basis Of Presentation [Line Items]
Direct ownership percentage in joint venture	75.00%
Joint Venture [Member]
Basis Of Presentation [Line Items]
Equity method ownership percentage in joint venture	37.50%

X

- Definition

Basis Of Presentation [Line Items]

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 323



-SubTopic 10



-Section 50



-Paragraph 3



-Subparagraph (a)(1)



-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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