Disposition fee.

No definition available.

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

- Definition

Real estate reclassified to held for sale.

+ References

No definition available.

+ Details

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Namespace Prefix:	sssht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Yield Maintenance Fees ,.

+ References

No definition available.

+ Details

Name:	sssht_YieldMaintenanceFees1
Namespace Prefix:	sssht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Name:	us-gaap_RealEstatePropertiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_RealEstatePropertiesAxis=sssht_TallahasseePropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=sssht_LossOnExtinguishmentOfDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sssht_TallahasseeStudentPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=sssht_LeasingAndLeasingRelatedRevenuesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=sssht_PropertyOperatingExpensesMember
Namespace Prefix:
Data Type:	na
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Real Estate Facilities and Real Estate Held for Sale - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jan. 06, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Real Estate Properties [Line Items]
Repayment of debt				$ 17,000,000
Tallahassee Property
Real Estate Properties [Line Items]
Sale price of the property	$ 50,000,000
Disposition Fee	250,000
Repayment of debt	23,500,000
Tallahassee Property \| Loss on Extinguishment of Debt
Real Estate Properties [Line Items]
Yield maintenance fees	$ 1,900,000
Tallahassee Student Property \| Leasing and leasing related revenues
Real Estate Properties [Line Items]
Real estate reclassified to held for sale		$ 0	$ 1,000,000.0	100,000	$ 2,000,000.0
Tallahassee Student Property \| Property operating expenses
Real Estate Properties [Line Items]
Real estate reclassified to held for sale		$ 0	$ 400,000	$ 100,000	$ 800,000