Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.8.0.1
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]      
Percentage of real estate investment trust taxable income distributed for exemption of federal income tax 90.00%    
Unrecognized tax benefits $ 0    
Accounts Payable and Accrued Expenses      
Summary Of Significant Accounting Policies [Line Items]      
Contingent payment $ 900,000   $ 900,000
Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of buildings and improvements 5 years    
Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of buildings and improvements 39 years    
ASU 2016-18      
Summary Of Significant Accounting Policies [Line Items]      
Restricted cash   $ 51,250