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Commitments and Contingencies (Details) - USD ($) $ in Millions | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 50.0 |
Letters of Credit Outstanding, Amount | 12.5 | $ 9.4
Purchase Commitment, Remaining Minimum Amount Committed | $ 17.1 |
Maximum [Member] | Operating Shopping Center [Member] |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 81.63% |
Minimum [Member] | Operating Shopping Center [Member] |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 16.63% |

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- Definition Letters of credit maximum borrowing capacity under line. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + 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 Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(17)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(19)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(25)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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- Details
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