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Earnings Per Share/Unit (EPS/EPU) - Additional Information (Detail) - shares | Sep. 30, 2015 | Sep. 30, 2014
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Earnings Per Share [Abstract] |  |
Unvested restricted stock / Unit awards | 388,695 | 463,774

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- References No definition available. + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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