Number of properties held for sale.

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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- Definition

Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format.

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No definition available.

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- Definition

Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

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Real Estate - Properties Held for Sale - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2017 USD ($) property	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) property	Dec. 31, 2016 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Impairment charges	$ 10,600	$ 3,800	$ 0	$ 14,455	$ 0
Fund II
Long Lived Assets Held-for-sale [Line Items]
Number of properties held-for-sale \| property	1			1
Properties held-for-sale	$ 25,400			$ 25,400
Date Sold			Apr. 17, 2018
Noncontrolling Interests
Long Lived Assets Held-for-sale [Line Items]
Impairment charges	$ 7,600	$ 2,700
Disposal group, held-for-sale
Long Lived Assets Held-for-sale [Line Items]
Properties held for sale net loss			$ 500	600
Impairment charges				10,600
Disposal group, held-for-sale \| Noncontrolling Interests
Long Lived Assets Held-for-sale [Line Items]
Impairment charges				$ 7,600