Subsequent Events - Summary of Key Information of Property (Details) - West Henrietta Property Acquisition	9 Months Ended
	Sep. 30, 2019 ft² Unit
Subsequent Event [Line Items]
Address	75 Erie Station Road, West Henrietta, New York 14586
Year Store Opened	2016
Number of Units | Unit	458
Net Leaseable Square Feet | ft²	46,850	[1]
Square Foot Occupancy %	74.40%

[1] Does not include a potential expansion of the property of up to approximately 7,300 net leasable square feet that we may undertake if the acquisition of the property is completed.