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Summary of Segment Net Revenues, Segment Operating income (Loss) and Reconciliation of Segment Income to Consolidated Income Before Income Taxes (Detail) (Parenthetical) (Detail) | Jun. 30, 2016
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Unconsolidated Joint Venture |
Segment Reporting Information [Line Items] |
Percentage of ownership in unconsolidated joint ventures | 50.00%

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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |