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Fair Value Measurements - Schedule Fair Value Measurements Inputs (Details) $ in Thousands | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Discount Rates |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Property held-for-sale, measurement input | 0.080 | 0.090
Capitalization Rates |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Property held-for-sale, measurement input | 0.080 |
Capitalization Rates | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Property held-for-sale, measurement input |  | 0.080
Capitalization Rates | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Property held-for-sale, measurement input |  | 0.090
Fair Value, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Interest rate swap liabilities | $ (10,891) | $ (17,963)
Fair Value, Recurring | Fair Value Measurements Using Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Interest rate swap liabilities | 0 | 0
Fair Value, Recurring | Fair Value Measurements Using Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Interest rate swap liabilities | (10,891) | (17,963)
Fair Value, Recurring | Fair Value Measurements Using Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Interest rate swap liabilities | 0 | 0
Fair Value, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired real estate assets | 2,980 | 21,141
Fair Value, Nonrecurring | Fair Value Measurements Using Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired real estate assets | 0 | 0
Fair Value, Nonrecurring | Fair Value Measurements Using Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired real estate assets | 0 | 2,480
Fair Value, Nonrecurring | Fair Value Measurements Using Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired real estate assets | $ 2,980 | $ 18,661

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