XML 63 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1
Summary of Significant Accounting Policies (Detail)
12 Months Ended 23 Months Ended
Dec. 31, 2017
USD ($)
segment
Dec. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Acquisition
Dec. 31, 2016
USD ($)
Acquisition
Dec. 31, 2015
USD ($)
Dec. 31, 2017
USD ($)
Acquisition
Jan. 22, 2015
USD ($)
Number of Acquisitions Completed from Unaffiliated Parties | Acquisition     9     18  
Bad debt expense     $ (83,000) $ 0 $ 0    
Cash and cash equivalents $ 7,087,000 $ 7,087,000 7,087,000 2,237,000 202,000 $ 7,087,000  
Restricted Cash 16,000 16,000 16,000 0 0 16,000  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 7,103,000 7,103,000 7,103,000 2,237,000 $ 202,000 7,103,000 $ 0
Allowance for Doubtful Accounts Receivable $ 83,000 $ 83,000 $ 83,000 $ 0   $ 83,000  
Percentage of ownership in operating partnership     99.99% 99.99%      
Percentage of limited partnership interest     0.01% 0.01%      
Percentage of income required to be distributed as dividends       90.00%      
Number of Reportable Segments 3 3          
Direct Write Offs Of Deferred Rent Receivable     $ 2,000        
Building and Building Improvements [Member] | Maximum [Member]              
Estimated useful life     39 years     39 years  
Leasehold Improvements [Member] | Maximum [Member]              
Estimated useful life     15 years     15 years  
Furniture and Fixtures [Member] | Maximum [Member]              
Estimated useful life     7 years     7 years  
2017 Acquisitions [Member]              
Number of Acquisitions Completed from Unaffiliated Parties | Acquisition     9        
2016 Acquisitions [Member]              
Number of Acquisitions Completed from Unaffiliated Parties | Acquisition       9