Number of units of real estate held for investment for entities with a substantial portion of business acquiring and holding investment real estate.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Footnote 2
-Subsection 28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28(Footnote 2))
-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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- Details

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- Details

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- Details

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Combined Guarantor Subsidiaries - Acquisitions - Narrative (Details)	1 Months Ended	12 Months Ended
	Feb. 28, 2018 USD ($)	Dec. 31, 2019 USD ($) store	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Westmoreland Mall - Bon-Ton Location
Business Acquisition [Line Items]
Payments to acquire real estate	$ 3,250,000
Guarantor Subsidiaries
Business Acquisition [Line Items]
Payments to acquire real estate		$ 8,453,000	$ 3,301,000	$ 0
Guarantor Subsidiaries \| Mall Del Norte - Outparcels Location
Business Acquisition [Line Items]
Payments to acquire real estate		$ 8,453,000
Number of locations purchased \| store		3
Guarantor Subsidiaries \| Westmoreland Mall - Bon-Ton Location
Business Acquisition [Line Items]
Payments to acquire real estate	$ 3,250,000