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NONCONTROLLING INTERESTS - Schedule of Noncontrolling Interests (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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IRET - Cypress Court Apartments, LLC |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests – consolidated real estate entities | $ 627 | $ 648

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- Definition Carrying amount of the equity interests owned by noncontrolling partners in an operating partnership included in the entity's consolidated financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition 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. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_OwnershipAxis=csr_IretCypressCourtApartmentsLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |