Summary of Significant Accounting Policies - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017 USD ($)
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
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