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STATEMENTS OF CASH FLOW (Parenthetical) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2020
STATEMENTS OF CASH FLOW |  |
Real estate acquired in connection with the foreclosure of certain mortgages, inclusive of interest and other fees receivable | $ 5,406,477 | $ 1,553,103
Reclassification of mortgage receivable | 879,457 |
Remaining balance of mortgages receivable | $ 0 |

X
- Definition Represents element information pertaining to amount of notes receivable reclassified to mortgage receivable. + References No definition available. + Details
Name: | sach_ReclassificationOfNotesReceivableToMortgageReceivable
Namespace Prefix: | sach_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of remaining balance of mortgages receivable. + References No definition available. + Details
Name: | sach_RemainingBalanceOfMortgagesReceivable
Namespace Prefix: | sach_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5162-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4437-111522 + Details
Name: | us-gaap_RealEstateAcquiredThroughForeclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration