Debt instrument maturity period.

No definition available.

Name:	brst_DebtInstrumentMaturityPeriod
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Period Type:	duration

- Definition

Number of mortgage loan.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Outstanding principal balance and prepayment penalty.

+ References

No definition available.

+ Details

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Namespace Prefix:	brst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Preferred Equity Interest Redemption Amount

+ References

No definition available.

+ Details

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

- Definition

Preferred equity investment and mezzanine loan.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Principal amount outstanding of loans held in portfolio to be matured within twelve months.

+ References

No definition available.

+ Details

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Namespace Prefix:	brst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

+ Details

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

- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

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

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

- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MinimumMember
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Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=brst_FortressMezzanineLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=brst_MortgageLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Note 1 - Organization and Nature of Business (Details Textual) $ in Thousands		3 Months Ended		12 Months Ended
	May 20, 2025 USD ($)	Mar. 31, 2025 USD ($) MortgageLoan	Mar. 31, 2024 USD ($)	Dec. 31, 2024
Real Estate Properties [Line Items]
Real estate investments		$ 375,900
Mortgages with principal balances outstanding		24,000
Redemption amount		111,900
General and administrative expenses		$ 3,579	$ 3,480
Minimum [Member]
Real Estate Properties [Line Items]
Short-term mortgages maturity period		3 years
Maximum [Member]
Real Estate Properties [Line Items]
Short-term mortgages maturity period		5 years
Fortress Mezzanine Loan [Member]
Real Estate Properties [Line Items]
Outstanding principal balance and prepayment penalty		$ 19,100
Mortgage Loans Due Within Twelve Months \| Mortgage Loan [Member]
Real Estate Properties [Line Items]
Number of mortgage loan \| MortgageLoan		3
Fortress Preferred Equity Investment [Member] \| Fortress Mezzanine Loan [Member]
Real Estate Properties [Line Items]
Combined carrying amount		$ 118,300
Fortress [Member] \| Maximum [Member]
Real Estate Properties [Line Items]
General and administrative expenses	$ 750,000
Operating Partnership [Member]
Real Estate Properties [Line Items]
Operating partnership percentage		86.40%		86.40%