XML 96 R82.htm IDEA: XBRL DOCUMENT
v3.25.4

COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) apartmentProperty apartmentHome realEstateTechnologyVentureFund | Dec. 31, 2024 USD ($)
Real Estate Properties [Line Items] |  |
Redemption basis | 1 |
Number of consecutive trading days for valuation | 10 days | 10 days
Aggregate redemption value of units of operating partnership owned by limited partners | $ 61,100 | $ 64,800
Number of real estate technology venture funds with unfunded commitments | realEstateTechnologyVentureFund | 2 |
Fair Value, Recurring |  |
Real Estate Properties [Line Items] |  |
Unfunded commitments | $ 650 |
Subject To Restrictions On Taxable Dispositions |  |
Real Estate Properties [Line Items] |  |
Number of properties | apartmentProperty | 21 |
Number of apartment homes (approximately) | apartmentHome | 4,766 |

X
- Definition Equity Securities, FV-NI, Unfunded Commitments + References No definition available. + Details
Name: | csr_EquitySecuritiesFVNIUnfundedCommitments
Namespace Prefix: | csr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of consecutive trading days for valuation. + References No definition available. + Details
Name: | csr_NumberOfConsecutiveTradingDaysForValuation
Namespace Prefix: | csr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Real Estate Technology Venture Funds With Unfunded Commitments + References No definition available. + Details
Name: | csr_NumberOfRealEstateTechnologyVentureFundsWithUnfundedCommitments
Namespace Prefix: | csr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The redemption value of UPREIT Units during the period. + References No definition available. + Details
Name: | csr_RedemptionValueOfUpreitUnits
Namespace Prefix: | csr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of limited partners' units to be redeemed in exchange for a number of common shares upon exercise of the redemption option by the limited partners. + References No definition available. + Details
Name: | csr_Redemptionbasis
Namespace Prefix: | csr_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=csr_SubjectToRestrictionsOnTaxableDispositionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |