Organization - Additional Information (Details)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Properties
Ownership in operating partnership	34.34%	33.41%
Real Estate
Properties
Percentage of total assets that must consist of real estate assets per the Internal Revenue Code election to be treated as REIT	75.00%
Percentage of total gross income that must be derived from real estate per the Internal Revenue Code election to be treated as REIT	75.00%