Commitments to Acquire/Dispose of Real Estate - Separate Agreement to Dispose of (Parenthetical) (Details)	Oct. 27, 2017 Land
Subsequent Event [Member] \| Land [Member]
Property/Unit schedule
Land Parcels	1

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration