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Fair Value Measurements - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) property | Sep. 30, 2019 USD ($) property | Sep. 30, 2018 USD ($) property | Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Number of properties impaired | property |  | 2 | 1 | 3 |
Interest expense, net | $ | $ 2,359 | $ 2,713 | $ 2,359 | $ 3,510 |
Mortgages Payable | Weighted Average Effective Market Rate |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Fair value measurement input | 0.0339 |  | 0.0339 |  | 0.0438
Line of Credit | Discount Rate |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Fair value measurement input | 0.0257 |  | 0.0257 |  | 0.0363

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