Represents the amount committed to the portfolio company

No definition available.

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

- Definition

Represents the maximum authorized purchase amount of shares that can be acquired under the 10b5-1 plan

+ References

No definition available.

+ Details

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- Definition

Represents the amount of unfunded commitment to the portfolio company

+ References

No definition available.

+ Details

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Namespace Prefix:	psbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of distribution payable to ownership interest holder from investment income and return of capital.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(10)(c))
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478790/946-405-45-2

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Balance Type:	credit
Period Type:	instant

- Definition

Date the declared dividend will be paid, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-3

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

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- Definition

Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ References

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section S99
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
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Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 3
-Subparagraph (SX 210.6-03(i)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events (Additional Information) (Details) - USD ($)		1 Months Ended
	Oct. 13, 2026	Nov. 03, 2026	Oct. 27, 2026	Sep. 30, 2026	Dec. 31, 2025
Subsequent Events To Be Updated [Line Items]
Distribution payable				$ 11,493,758	$ 13,442,214
Galway Borrower LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				559,500	4,436,067
Unfunded commitment				470,150	3,530,286
Dwyer Instruments, LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment					1,197,934
Unfunded commitment					768,720
MRI Software, LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				636,370	636,370
Unfunded commitment				477,278	509,096
Aptean Inc [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				528,261	528,262
Unfunded commitment				301,864	377,330
Deerfield Dakota Holding LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				857,143
Unfunded commitment				557,143
Radwell Parent, LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				1,316,252
Unfunded commitment				1,218,787
CoreWeave Financing DDTL V LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				2,762,500
Unfunded commitment				1,110,717
USIC Holdings Inc [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				321,873	148,535
Unfunded commitment				34,946	63,572
Galaway Borrower LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment				3,326,023	559,500
Unfunded commitment				$ 2,720,687	$ 461,641
Subsequent Event [Member]
Subsequent Events To Be Updated [Line Items]
Repurchased shares of its common stock (in Shares)		96,443
Repurchase Plan at an aggregate price		$ 942,492
Subsequent Event [Member] \| CoreWeave Financing DDTL V LLC [Member]
Subsequent Events To Be Updated [Line Items]
Outstanding commitment			$ 437,835.5
Unfunded commitment			$ 672,881.17
Subsequent Event [Member] \| Distribution Date October 13, 2026
Subsequent Events To Be Updated [Line Items]
Distribution payable	$ 11,493,758
Record Date	Sep. 25, 2026
Payment Date	Oct. 13, 2026
Distribution paid per share	$ 0.38