Organization, Basis of Presentation and Significant Accounting Policies (Detail) |
Sep. 30, 2018
Agreement
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Number of operating ground lease arrangements | 4 |
| X | ||||||||||
- Definition Lessee, Operating Lease, Number of Units Under Operating Lease Arrangements No definition available.
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| X | ||||||||||
- References No definition available.
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