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Basis of Presentation and Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2016
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)
________________________
(1)
Tenant improvements are amortized over the shorter of the lease term or the estimated useful life.