SUBSEQUENT EVENTS - Self Storage Property Acquisitions (Details) $ in Thousands |
2 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Feb. 26, 2021
USD ($)
property
shares
|
Dec. 31, 2020
USD ($)
property
|
Sep. 30, 2020
USD ($)
property
|
Jun. 30, 2020
USD ($)
property
|
Mar. 31, 2020
USD ($)
property
|
Dec. 31, 2019
USD ($)
property
|
Sep. 30, 2019
USD ($)
property
|
Jun. 30, 2019
USD ($)
property
|
Mar. 31, 2019
USD ($)
property
|
Dec. 31, 2020
USD ($)
property
|
Dec. 31, 2019
USD ($)
property
|
|
| Subsequent Event [Line Items] | |||||||||||
| Number of properties acquired | property | 33 | 4 | 4 | 36 | 7 | 6 | 24 | 32 | 77 | 69 | |
| Gross sales price of acquisition | $ 260,508 | $ 23,804 | $ 36,247 | $ 222,773 | $ 32,163 | $ 35,771 | $ 185,335 | $ 194,561 | $ 543,332 | $ 447,830 | |
| Net cash paid in acquisition | 237,517 | 20,173 | 30,198 | 214,584 | 30,004 | 34,624 | 168,442 | 160,531 | 502,472 | 393,601 | |
| Assumption of other working capital liabilities in acquisition | 2,244 | 204 | 207 | 972 | 154 | 197 | 1,378 | 674 | 3,627 | 2,403 | |
| Equity issued in acquisition | $ 20,747 | $ 3,427 | $ 5,842 | $ 7,217 | $ 2,005 | $ 950 | $ 15,515 | $ 33,356 | $ 37,233 | $ 51,826 | |
| Subsequent Event | |||||||||||
| Subsequent Event [Line Items] | |||||||||||
| Number of properties acquired | property | 13 | ||||||||||
| Gross sales price of acquisition | $ 84,500 | ||||||||||
| Net cash paid in acquisition | 78,100 | ||||||||||
| Assumption of other working capital liabilities in acquisition | 600 | ||||||||||
| Equity issued in acquisition | $ 5,800 | ||||||||||
| Subsequent Event | OP units | |||||||||||
| Subsequent Event [Line Items] | |||||||||||
| Number of units issued in acquisition | shares | 126,867 | ||||||||||
| Subsequent Event | Subordinated performance units | |||||||||||
| Subsequent Event [Line Items] | |||||||||||
| Number of units issued in acquisition | shares | 31,119 | ||||||||||
| Subsequent Event | Due diligence costs | Management | |||||||||||
| Subsequent Event [Line Items] | |||||||||||
| Due diligence expenses payable to the PROs | $ 200 | ||||||||||