LEASE ASSETS AND LIABILITIES Table 5 (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Leases [Abstract] | ||
| Lease storage assets, at cost | $ 241,664,000 | $ 238,204,000 |
| Less accumulated depreciation | 130,217,000 | 121,545,000 |
| Lease storage assets, net | $ 111,447,000 | $ 116,659,000 |
| Estimated useful life | 30 years |