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Fair Value - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
Fair Value - Narrative (Details) $ in Thousands	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