Real Estate Assets - Additional Information (Details) |
9 Months Ended |
|---|---|
|
Sep. 30, 2017
USD ($)
ft²
| |
| Merrillville, IN | |
| Real Estate Properties [Line Items] | |
| Gross square feet of traditional drive-up storage units and all-climate-controlled units | 13,300 |
| Aggregate cost to expansion of storage facilities | $ | $ 400,000 |
| Millbrook, NY | |
| Real Estate Properties [Line Items] | |
| Gross square feet of traditional drive-up storage units and all-climate-controlled units | 16,500 |
| Estimate for expansion relating to construction cost | The planning for the Millbrook, NY expansion is under development and the Company is actively evaluating proposals for its construction. As of September 30, 2017, a final estimate of construction costs has not yet been determined. |