Real Estate - Disposed Properties to Unaffiliated Parties (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Property ApartmentUnit	Dec. 31, 2020 USD ($) Property ApartmentUnit
Properties disposed | Property	14	6
Property Units disposed | ApartmentUnit	3,053	2,231
Sales Price	$ 1,716,775	$ 1,122,371
Rental Properties – Consolidated [Member]
Properties disposed | Property	14	6
Property Units disposed | ApartmentUnit	3,053	2,231
Sales Price	$ 1,716,775	$ 1,066,861
Land Parcels [Member]
Sales Price		$ 55,510