Real Estate - Acquired Properties From Unaffiliated Parties (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) Property ApartmentUnit
Properties acquired | Property	10
Property Units acquired | ApartmentUnit	2,728
Purchase Price	$ 1,144,412
Rental Properties - Consolidated [Member]
Properties acquired | Property	10
Property Units acquired | ApartmentUnit	2,728
Purchase Price	$ 1,124,580
Land Parcels [Member]
Purchase Price	$ 19,832