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Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended
Mar. 31, 2018
USD ($)
Property
Arrangement
shares
Jan. 01, 2018
USD ($)
Dec. 31, 2017
USD ($)
Summary Of Significant Accounting Policies [Line Items]      
Cumulative adjustment to partners' capital | $     $ (216,948)
Number of lessee arrangements | Arrangement 4    
Restricted Unit Awards [Member] | Burlington [Member] | Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Approved grant of restricted units and other awards to employees | shares 3,000,000    
RUAs granted with vesting range 3 years    
Restricted Unit Awards [Member] | Burlington [Member] | Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
RUAs granted with vesting range 3 months    
ASU 2017-08 [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Cumulative adjustment to partners' capital | $   $ 217,000  
Decrease in investment income | $ $ 17,000    
Greens Hold Co [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Number of Real Estate Properties | Property 1    
Jade Park [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Number of Real Estate Properties | Property 1    
Suites on Paseo [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Number of Real Estate Properties | Property 1