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Related Party Transactions and Arrangements (Listing Arrangements) (Details)
9 Months Ended
Sep. 30, 2020
Dec. 31, 2015
Related Party Transaction [Line Items]    
Consecutive trading dates commencing converted shares 180 days  
Excess of Adjusted Market Value of Real Estate Assets Plus Distributions Over Aggregate Contributed Investor Capital | Advisor | New York City Reit Advisors, LLC    
Related Party Transaction [Line Items]    
Subordinated participation fees as a percentage of benchmark 15.00%  
Pre-tax Non-compounded Return on Capital Contribution | Advisor | New York City Reit Advisors, LLC | Annual Targeted Investor Return    
Related Party Transaction [Line Items]    
Cumulative capital investment return to investors as a percentage of benchmark 6.00% 6.00%