v3.7.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Related Party Transaction [Line Items]      
Due to related parties $ 1,310,000   $ 364,000
Accounts payable and other liabilities 18,233,000   17,396,000
Manager and Asset Manager      
Related Party Transaction [Line Items]      
Due to related parties $ 1,310,000   $ 364,000
Property Management Agreement      
Related Party Transaction [Line Items]      
Received advance operating interest rate 1.00%    
Received guarantee agreement interest rate 0.05%    
Advances or guarantees fees outstanding or received $ 0 $ 0  
Termination fees $ 13,416    
Asset Management Agreement      
Related Party Transaction [Line Items]      
Receivable interest rate 1.00%    
Percentage of contributions paid as marketing fees 0.50%    
Deferred Compensation Interest Rate 7.00%    
Deferred compensation $ 0 $ 0  
Asset Management Agreement | Minimum      
Related Party Transaction [Line Items]      
Cumulative distribution per share $ 3.50    
Asset Management Agreement | Maximum      
Related Party Transaction [Line Items]      
Termination fees $ 38,388    
Legal Services | VNN      
Related Party Transaction [Line Items]      
Accounts payable and other liabilities $ 456,000