Carrying value as of the balance sheet date of [accrued] interest payable on debt, to related parties.

No definition available.

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amounts owed for acquisition fees to Advisor

+ References

No definition available.

+ Details

Name:	sret_AcquisitionFeesOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fees incurred to cover the office facilities, equipment, supplies and staff required to manage the Real Estate Investment Trust (REIT).

+ References

No definition available.

+ Details

Name:	sret_AdvisoryManagementFees
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amounts owed for management fees to Advisor.

+ References

No definition available.

+ Details

Name:	sret_AdvisoryManagementFeesOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of general operation cost incurred and capital expenditures related to construction in progress.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of construction fees incurred and paid during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of construction fees payable as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	sret_ConstructionFeesPayable
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Total development fees incurred with our Advisor.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amounts owed for development fees to Advisor.

+ References

No definition available.

+ Details

Name:	sret_DevelopmentFeesOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Total disposition fees incurred with our Advisor.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amounts owed for disposition fees to Advisor.

+ References

No definition available.

+ Details

Name:	sret_DispositionFeesOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Total financing fees incurred with our Advisor for loan financing and refinancing activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amounts owed for financing fees to Advisor

+ References

No definition available.

+ Details

Name:	sret_FinancingFeesForLoanFinancingAndRefinancingOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of general construction costs incurred during the period.

+ References

No definition available.

+ Details

Name:	sret_GeneralConstructionCosts
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of general construction costs payable as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	sret_GeneralConstructionCostsPayable
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of loan outstanding on related party debt.

+ References

No definition available.

+ Details

Name:	sret_LoanPayableRelatedParty
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number Of Paid Employees

+ References

No definition available.

+ Details

Name:	sret_NumberOfPaidEmployees
Namespace Prefix:	sret_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of operating partnership (OP) units issued in connection with acquisitions.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of operating partnership (OP) units issued in connection with acquisitions.

+ References

No definition available.

+ Details

Name:	sret_OperatingPartnershipUnitsIssuedInConnectionWithAcquisitionValue
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of operational receivables outstanding as of the balance sheet date from related parties.

+ References

No definition available.

+ Details

Name:	sret_OperationReceivablesOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of other operational liabilities outstanding as on the balance sheet date.

+ References

No definition available.

+ Details

Name:	sret_OtherOperationalLiabilitiesOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of project management fees incurred during period.

+ References

No definition available.

+ Details

Name:	sret_ProjectManagementFee
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying amount as of the balance sheet date of project management fees payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Total real estate commissions incurred with a related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amounts owed to related party for real estate commissions.

+ References

No definition available.

+ Details

Name:	sret_RealEstateCommissionsOutstanding
Namespace Prefix:	sret_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of interest expense incurred on a debt or other obligation to related party.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

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Related Party Transactions - Advisory Agreement and Other (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) employee shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2021 USD ($)
Related Party Transactions
Number of paid employees \| employee			0
Operation receivables outstanding	$ 42		$ 42		$ 128
Rental income	32,050	$ 30,627	94,168	$ 89,253
Costs and expenditures incurred due to construction in progress			420	187
Operational liabilities outstanding	3		3
Sterling Management, LLC
Related Party Transactions
Advisory management fees			2,739	2,474
Advisory management fees outstanding	313		313		296
Acquisition fees			934	375
Acquisition fees outstanding	58		58
Development fees outstanding					79
Disposition fees			631	146
Disposition fees outstanding	30		30
Financing fees			83	146
Financing fees outstanding	4		4		38
Project management fee			420	409
Project management fee outstanding	3		3		98
Rental income			97	77
GOLDMARK Property Management
Related Party Transactions
Real estate commissions			319	217
Real estate commissions outstanding	59		59		0
Rental income			200	224
GOLDMARK SCHLOSSMAN Commercial Real Estate Services
Related Party Transactions
Real estate commissions			371	297
Real estate commissions outstanding	29		$ 29		0
Rental income				19
Entity Affiliated With Messrs Regan and Wieland
Related Party Transactions
Number of operating partnership (OP) units issued in connection with the acquisition of various properties \| shares			510,000
Value of operating partnership (OP) units issued in connection with the acquisition of various properties			$ 11,741
Trumont Group, LLC
Related Party Transactions
Development fee			717	51
Development fees outstanding	103		103		51
Trumont Construction, LLC
Related Party Transactions
Construction fees			734	12
Construction fees payable	94		94		29
General construction costs			284	41
General construction costs payable	49		49
Bell Bank
Related Party Transactions
Rental income			639	278
Outstanding on principal loans	64,691		64,691		66,365
Interest expense incurred			491	$ 1,511
Accrued interest	$ 125		$ 125		$ 148
Affiliated Entities
Related Party Transactions
Number of operating partnership (OP) units issued in connection with the acquisition of various properties \| shares				0