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v3.21.2

Fair Value Measurements (Narrative) (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) property | Sep. 30, 2021 USD ($) property | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair value of fixed rate mortgage loans payable | $ 162,500,000 | $ 162,500,000 |  | $ 47,000,000.0
Carrying value of fixed rate mortgage payable | $ 157,000,000.0 | $ 157,000,000.0 |  | 45,400,000
Number of properties | property | 53 | 53 |  |
Real estate held for sale | $ 1,876,000 | $ 1,876,000 |  | $ 9,498,000
Impairment charges | 82,736,000 | 80,887,000 | $ 7,607,000 |
Aggregate fair value of impairment charges | $ 247,400,000 | 247,400,000 |  |
Dual-track Strategic Alternatives Process [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Impairment charges |  | $ 82,300,000 |  |
Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Weighted average |  | 6.90% |  |
Level 3 [Member] | Minimum [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Capitalization rate |  | 6.00% |  |
Level 3 [Member] | Maximum [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Capitalization rate |  | 8.80% |  |
Nonrecurring Basis [Member] | Level 3 [Member] | Assets [Member] | Retail Properties [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Number of properties | property | 1 | 1 |  |
Real estate held for sale | $ 1,900,000 | $ 1,900,000 |  |
Impairment charges |  | $ 400,000 |  |
Nonrecurring Basis [Member] | Level 3 [Member] | Assets [Member] | Retail Properties [Member] | Direct Approach Valuation Technique | Measurement Input, Cap Rate | Minimum [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Capitalization rate |  | 9.10% |  |

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