XML 55 R41.htm IDEA: XBRL DOCUMENT
v3.25.0.1

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Real Estate Investments (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) apartmentCommunity | Dec. 31, 2022 USD ($)
Real Estate Properties [Line Items] |  |  |
Real estate investments | $ 1,854,761,000 | $ 1,889,443,000 |
Construction period interest capitalized | 0 | 0 | $ 0
Impairment of real estate investments | $ 0 | $ 5,218,000 | $ 0
Number of apartment communities impaired during year | apartmentCommunity |  | 2 |
Richfield, MN |  |  |
Real Estate Properties [Line Items] |  |  |
Impairment of real estate investments |  | $ 3,000,000.0 |
Number of apartment communities impaired during year | apartmentCommunity |  | 1 |
New Hope, MN |  |  |
Real Estate Properties [Line Items] |  |  |
Impairment of real estate investments |  | $ 2,200,000 |
Number of apartment communities impaired during year | apartmentCommunity |  | 1 |
Minimum | Buildings and Improvements |  |  |
Real Estate Properties [Line Items] |  |  |
Estimated useful life of assets (in years) | 10 years |  |
Minimum | Furniture, Fixtures and Equipment |  |  |
Real Estate Properties [Line Items] |  |  |
Estimated useful life of assets (in years) | 5 years |  |
Minimum | Renovations and Improvements |  |  |
Real Estate Properties [Line Items] |  |  |
Estimated useful life of assets (in years) | 5 years |  |
Maximum | Buildings and Improvements |  |  |
Real Estate Properties [Line Items] |  |  |
Estimated useful life of assets (in years) | 37 years |  |
Maximum | Furniture, Fixtures and Equipment |  |  |
Real Estate Properties [Line Items] |  |  |
Estimated useful life of assets (in years) | 10 years |  |
Maximum | Renovations and Improvements |  |  |
Real Estate Properties [Line Items] |  |  |
Estimated useful life of assets (in years) | 20 years |  |

X
- Definition Number Of Apartment Communities Impaired During Year + References No definition available. + Details
Name: | csr_NumberOfApartmentCommunitiesImpairedDuringYear
Namespace Prefix: | csr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-2 + Details
Name: | us-gaap_ImpairmentOfRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life on which depreciation was computed for entities with a substantial portion of business acquiring and holding investment real estate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column I)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of interest capitalized to an operative builder's inventory during the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483013/835-20-50-1 + Details
Name: | us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=csr_RichfieldMNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=csr_NewHopeMNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=csr_RenovationsAndImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |