Organization (Details) - Operating partnership	Sep. 30, 2017
Organization
Percentage of ownership interests held by the entity	71.00%
Percentage of ownership interests held by others	29.00%

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.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
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