Investments in Unconsolidated Real Estate Joint Ventures Investments in Unconsolidated Real Estate Joint Ventures - Impairment (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Schedule of Equity Method Investments [Line Items] | ||||
| Impairment charges | $ 0 | $ 0 | ||
| Unconsolidated Properties [Member] | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Impairment charges | $ 14,359,000 | 18,042,000 | 5,838,000 | |
| Unconsolidated Properties [Member] | Bromont and Les Factories St. Sauveur [Member] | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Impairment charges | 14,359,000 | 18,042,000 | ||
| Company's share of impairment charge | $ 7,200,000 | $ 7,180,000 | $ 9,021,000 | |
| Unconsolidated Properties [Member] | Bromont Outlet Mall Property [Member] | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Impairment charges | 5,838,000 | |||
| Company's share of impairment charge | $ 2,919,000 | |||
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- Definition Impairment losses measured as the amount by which the carrying amount of the business or real estate partnerships exceeds the fair value of the business or partnership. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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. No definition available.
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