Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Basis of Presentation and Significant Accounting Policies [Abstract]

Buildings, improvements, and tenant improvements depreciation

Asset Description	Depreciable Lives
Buildings and improvements	25 – 40 years
Tenant improvements	1 – 20 years (1)

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(1) Tenant improvements are amortized over the shorter of the lease term or the estimated useful life.