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Fair Value - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) derivative shares | Jun. 30, 2021 shares | Jun. 30, 2022 USD ($) derivative shares | Jun. 30, 2021 shares
Derivative instruments and Hedging Activities |  |  |  |
Weighted average DownREIT units outstanding (in shares) | shares | 7,500 | 7,500 | 7,500 | 7,500
Interest Rate Swaps | Cash Flow Hedges |  |  |  |
Derivative instruments and Hedging Activities |  |  |  |
Notional balance | $ 150,000 |  | $ 150,000 |
Reclassification out of Accumulated Other Comprehensive Income |  |  |  |
Derivative instruments and Hedging Activities |  |  |  |
Estimated hedging losses to be reclassified from accumulated other comprehensive loss into earnings within the next twelve months |  |  | $ 4,051 |
Not Designated as Hedging Instrument |  |  |  |
Derivative instruments and Hedging Activities |  |  |  |
Number of derivative instruments held | derivative | 5 |  | 5 |

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