ORGANIZATION (Details) - Apartment Properties	Mar. 31, 2021 apartmentProperty apartmentUnit
Real Estate Properties [Line Items]
Number of real estate properties \| apartmentProperty	68
Number of apartment units \| apartmentUnit	12,168

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RealEstatePropertiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration