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Summary of Significant Accounting Policies (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
Related Party Transaction [Line Items]  
Acquisition fees and expenses, percentage of contract purchase 6.00%
Organization and Offering Costs | Sub-Advisor | Maximum  
Related Party Transaction [Line Items]  
Percentage of gross offering proceeds from primary offering, reimbursable as organization and offering costs (not to exceed) 15.00%
Organization and Offering Costs | Advisor  
Related Party Transaction [Line Items]  
Reimbursable organization and offering costs, excluding selling commissions, dealer manager fees, and distribution fees (not to exceed) $ 18,000,000
Expected reimbursable organization and offering costs, excluding selling commissions and dealer manager fee, as a percentage of total proceeds available to be raised from the primary offering (not to exceed) 1.00%