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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.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of real estate acquired, at the acquisition date.

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The number of businesses acquired by the entity during the period.

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The number of units in a real estate property owned as of the balance sheet date.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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ACQUISITIONS AND DISPOSITIONS - Acquisitions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) realEstate apartmentUnit	Jun. 30, 2020 USD ($) apartmentUnit realEstate	Jun. 30, 2021 USD ($) apartmentUnit	Jun. 30, 2020 USD ($) apartmentUnit
Business Acquisition [Line Items]
Number of acquisitions \| realEstate	0	0
Union Pointe Apartment Homes - Longmont, CO
Acquisitions and development projects placed in service [Abstract]
Number of homes \| apartmentUnit	256		256
Acquisition costs			$ 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
Ironwood Apartments - New Hope, MN
Acquisitions and development projects placed in service [Abstract]
Number of homes \| apartmentUnit		182		182
Acquisition costs				$ 46,263
Form of Consideration
Cash				28,600
Other				17,663
Investment Allocation
Land		$ 2,165		2,165
Building		36,869		36,869
Intangible Assets		824		824
Other		$ 6,405		$ 6,405