Face amount of the debt instrument that is available for borrowing at time the agreement is executed and/or amended.

No definition available.

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Namespace Prefix:	pshg_
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Balance Type:	credit
Period Type:	instant

- Definition

Number of existing loan facilities being refinanced.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

Number of loan agreements with the bank.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The amount prepaid to a bank subsequent to the balance sheet date, in connection with the sale of a vessel, reflecting early settlement of outstanding loan obligations secured against the disposed vessel.

+ References

No definition available.

+ Details

Name:	pshg_PrepaymentOfBankDebtInConnectionWithVesselSale
Namespace Prefix:	pshg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Balance Type:	credit
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

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

Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Long-Term Debt and Bonds, Secured Term Loans - Alpha Bank (Details) $ in Thousands				1 Months Ended		6 Months Ended
	Jul. 24, 2026 USD ($)	Jul. 24, 2025 USD ($)	Jul. 23, 2025 USD ($) Agreement	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Apr. 30, 2024 Agreement
Long-Term Debt and Bonds [Abstract]
Proceeds from loan agreement						$ 45,000	$ 0
Classified amount from assets held for sale						22,924		$ 12,391
Alpha Bank Term Loans [Member]
Long-Term Debt and Bonds [Abstract]
Proceeds from loan agreement		$ 29,750
Number of loan agreements with Alpha Bank \| Agreement									2
Margin on variable rate			1.90%
Payments to collateral accounts						26,600		$ 28,700
Face amount			$ 29,750
Term			5 years
Number of existing loan facilities being refinanced \| Agreement			2
Classified amount from assets held for sale						$ 11,567
Alpha Bank Term Loans [Member] \| Subsequent Event [Member]
Long-Term Debt and Bonds [Abstract]
Prepayment of bank debt in connection with vessel sale	$ 12,775
P. Aliki Loan [Member]
Long-Term Debt and Bonds [Abstract]
Borrowing capacity					$ 18,250
Proceeds from loan agreement					$ 18,250
P. Aliki Loan [Member] \| Maximum [Member]
Long-Term Debt and Bonds [Abstract]
Margin on variable rate						2.60%
P. Aliki Loan [Member] \| Minimum [Member]
Long-Term Debt and Bonds [Abstract]
Margin on variable rate						0.65%
P. Long Beach Loan [Member]
Long-Term Debt and Bonds [Abstract]
Borrowing capacity				$ 22,000
Proceeds from loan agreement				$ 22,000
P. Long Beach Loan [Member] \| Maximum [Member]
Long-Term Debt and Bonds [Abstract]
Margin on variable rate						2.35%
P. Long Beach Loan [Member] \| Minimum [Member]
Long-Term Debt and Bonds [Abstract]
Margin on variable rate						0.65%