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Investments - Summary of Unaudited Financial Information and Unaudited Financial Position of Joint Venture (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Percentage of operating results	90.00%

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- References

No definition available.

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685

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