Real Estate - Disposed Properties to Unaffiliated Parties (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) Property ApartmentUnit
Properties disposed | Property	10
Property Units disposed | ApartmentUnit	1,842
Sales Price | $	$ 1,021,800
Rental Properties – Consolidated [Member]
Properties disposed | Property	10
Property Units disposed | ApartmentUnit	1,842
Sales Price | $	$ 1,021,800