SELF STORAGE PROPERTIES (Details) - USD ($) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
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| Real Estate [Abstract] | |||
| Land | $ 612,273 | $ 583,455 | |
| Buildings and improvements | 2,214,345 | 2,048,281 | |
| Furniture and equipment | 6,127 | 5,987 | |
| Total self storage properties | 2,832,745 | 2,637,723 | |
| Less accumulated depreciation | (267,796) | (246,261) | |
| Self storage properties, net | 2,564,949 | $ 2,391,462 | |
| Depreciation expense related to self storage properties | $ 21,500 | $ 18,000 | |
| X | ||||||||||
- Definition The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated depreciation of fixtures and equipment. Includes, but is not limited to, machinery, equipment, and engines. No definition available.
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- Definition Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The cumulative amount of depreciation for real estate property held for investment purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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