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ACQUISITIONS AND DISPOSITIONS - Acquisitions (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Sep. 01, 2021 apartmentCommunity	Jun. 30, 2022 USD ($) apartmentProperty	Jun. 30, 2021 USD ($) apartmentProperty	Jun. 30, 2022 USD ($) apartmentHome	Jun. 30, 2021 USD ($) apartmentHome
Acquisitions and development projects placed in service [Abstract]
Total acquisition cost				$ 116,874
Form of Consideration
Cash				9,093
Units				22,882
Other				84,899
Investment Allocation
Land		$ 7,339		7,339
Building		106,080		106,080
Intangible Assets		4,672		4,672
Other		$ (1,217)		$ (1,217)
2022 Acquisitions
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired \| apartmentProperty		0
Martin Blu - Minneapolis, MN
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired \| apartmentHome				191
Total acquisition cost				$ 49,825
Form of Consideration
Cash				3,031
Units				18,885
Other				27,909
Investment Allocation
Land		$ 3,547		3,547
Building		45,212		45,212
Intangible Assets		1,813		1,813
Other		(747)		$ (747)
Elements - Minneapolis, MN
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired \| apartmentHome				31
Total acquisition cost				$ 9,066
Form of Consideration
Cash				1,290
Units				1,748
Other				6,028
Investment Allocation
Land		941		941
Building		7,853		7,853
Intangible Assets		335		335
Other		(63)		$ (63)
Zest - Minneapolis, MN
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired \| apartmentHome				45
Total acquisition cost				$ 11,364
Form of Consideration
Cash				1,429
Units				2,249
Other				7,686
Investment Allocation
Land		936		936
Building		10,261		10,261
Intangible Assets		574		574
Other		(407)		$ (407)
Noko Apartments - Minneapolis, MN
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired \| apartmentHome				130
Total acquisition cost				$ 46,619
Form of Consideration
Cash				3,343
Units				0
Other				43,276
Investment Allocation
Land		1,915		1,915
Building		42,754		42,754
Intangible Assets		1,950		1,950
Other		$ 0		$ 0
2021 Acquisitions
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired	17		0
Union Pointe Apartment Homes - Longmont, CO
Acquisitions and development projects placed in service [Abstract]
Number of apartment homes acquired \| apartmentHome					256
Total acquisition cost					$ 76,900
Form of Consideration
Cash					76,900
Investment Allocation
Land			$ 5,727		5,727
Building			69,966		69,966
Intangible Assets			$ 1,207		$ 1,207