Quarterly report pursuant to Section 13 or 15(d)

Real Estate Assets - Additional Information (Details)

Real Estate Assets - Additional Information (Details) - Millbrook, NY - ft²
3 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Real Estate Properties [Line Items]    
Estimate for expansion relating to construction cost   As of March 31, 2019, development costs for this project has been capitalized and are reflected in real estate assets, net on the Company’s consolidated balance sheet.
Scenario Forecast    
Real Estate Properties [Line Items]    
Gross square feet of traditional drive-up storage units and all-climate-controlled units 16,500