Mortgages Receivable (Details 1) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
2018	$ 55,993,536
2019	12,952,075
2020	9,149,824
2021	795,675
Total	$ 78,891,110	$ 63,270,959

Maturities for the fourth year following the date of the financial statements.

No definition available.

Name:	sach_MaturitiesOfMortagageReceivableYearFour
Namespace Prefix:	sach_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maturities for the first year following the date of the financial statements.

+ References

No definition available.

+ Details

Name:	sach_MaturitiesOfMortagageReceivableYearOne
Namespace Prefix:	sach_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maturities for the third year following the date of the financial statements.

+ References

No definition available.

+ Details

Name:	sach_MaturitiesOfMortagageReceivableYearThree
Namespace Prefix:	sach_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maturities for the second year following the date of the financial statements.

+ References

No definition available.

+ Details

Name:	sach_MaturitiesOfMortagageReceivableYearTwo
Namespace Prefix:	sach_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant