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

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