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v3.25.3

Commitments and Contingencies (Details) $ in Millions | Sep. 30, 2025 USD ($) property | Dec. 31, 2024 USD ($) property
--- | --- | ---
Commitments and Contingencies |  |
Number of mortgage properties | property | 1 | 2
Mortgages receivable | $ 0.3 | $ 1.9
Unfunded Commitments |  |
Commitments and Contingencies |  |
Future funding obligations, Loans held for investment | 47.3 |
Future funding obligations, Investment in limited liability companies | $ 2.4 |

X
- Definition The amount of mortgage receivable for the such properties of an entity during the period. + References No definition available. + Details
Name: | sach_AmountOfMortgageReceivable
Namespace Prefix: | sach_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the number of mortgage properties. + References No definition available. + Details
Name: | sach_NumberOfMortgageProperties
Namespace Prefix: | sach_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of liability relating to the entity's future funding obligations on investments in limited liability companies as of the reporting date. + References No definition available. + Details
Name: | sach_OtherCommitmentsFutureFundingObligationsInvestmentInLimitedLiabilityCompanies
Namespace Prefix: | sach_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liability relating to the entity's future funding obligations on loans held for investment as of the reporting date. + References No definition available. + Details
Name: | sach_OtherCommitmentsFutureFundingObligationsLoansHeldForInvestment
Namespace Prefix: | sach_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |