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STORAGE FACILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
STORAGE FACILITIES
Storage facilities	$ 3,260,426	$ 3,117,198
Less: Accumulated depreciation	(549,206)	(492,069)
Storage facilities, net (including VIE assets of $75,448 and $49,829, respectively)	2,711,220	2,625,129
Land
STORAGE FACILITIES
Storage facilities	565,187	545,393
Buildings and improvements
STORAGE FACILITIES
Storage facilities	2,387,241	2,304,653
Equipment
STORAGE FACILITIES
Storage facilities	230,062	218,731
Construction in progress
STORAGE FACILITIES
Storage facilities	$ 77,936	$ 48,421

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The cumulative amount of depreciation for real estate property held for investment purposes.

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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.

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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.

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