The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Section 50
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
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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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No definition available.

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Property, Plant, and Equipment - Schedule of loss on sale or write down of assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Write-down of assets	$ (8,754)	$ (3,907)	$ (38,362)	$ (40,610)
Gain (loss) on sale or write down of assets, net	(3,927)	(3,867)	(25,210)	(40,570)
Paradise Valley Mall
Property, Plant and Equipment [Line Items]
Gain on sales	4,229		4,229
Paradise Valley Mall
Property, Plant and Equipment [Line Items]
Write-down of assets				(6,640)
Estrella Falls
Property, Plant and Equipment [Line Items]
Write-down of assets			(27,281)
Wilton Mall
Property, Plant and Equipment [Line Items]
Write-down of assets				(30,063)
Property
Property, Plant and Equipment [Line Items]
Gain on sales	(10,895)	0	(6,666)	0
Land
Property, Plant and Equipment [Line Items]
Gain on sales	15,722	$ 40	19,818	$ 40
Land \| Paradise Valley Mall
Property, Plant and Equipment [Line Items]
Gain on sales	$ 1,334		$ 1,334