Percentage fee charged by a bank for setting up a loan.

No definition available.

Name:	pshg_DebtInstrumentArrangementFeePercentage
Namespace Prefix:	pshg_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	pshg_DebtInstrumentBorrowingCapacity
Namespace Prefix:	pshg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of balloon installment payments to be paid under the debt instrument.

+ References

No definition available.

+ Details

Name:	pshg_DebtInstrumentNumberOfBalloonInstallmentPayments
Namespace Prefix:	pshg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of tanker vessels used as collateral to secure the debt instrument.

+ References

No definition available.

+ Details

Name:	pshg_DebtInstrumentNumberOfTankerVesselsUsedAsCollateral
Namespace Prefix:	pshg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of vessel-owning subsidiaries entering into a loan agreement.

+ References

No definition available.

+ Details

Name:	pshg_DebtInstrumentNumberOfVesselOwningSubsidiariesEnteringIntoLoanAgreement
Namespace Prefix:	pshg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Outstanding indebtedness on vessel to be refinanced under loan facility.

+ References

No definition available.

+ Details

Name:	pshg_OutstandingIndebtednessOnVesselToBeRefinanced
Namespace Prefix:	pshg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Acquisition price of vessel to be financed under loan facility.

+ References

No definition available.

+ Details

Name:	pshg_VesselAcquisitionFinancingAmount
Namespace Prefix:	pshg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of a specific compensating balance arrangement that is maintained under an agreement for a bank loan or future credit availability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-3

+ Details

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

- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

+ Details

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

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-3

+ Details

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

- 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

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

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

Name:	us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69F
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-6

+ Details

Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

Name:	us-gaap_InterestPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding calculated over time.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtWeightedAverageInterestRateOverTime
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfSecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

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

- Definition

Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-SubTopic 210
-Topic 954
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480632/954-210-45-5

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-8

+ Details

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

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Name:	us-gaap_SecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_BalanceSheetLocationAxis=pshg_AccruedLiabilitiesCurrentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=pshg_SecuredTermLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=pshg_SecuredTermLoansAfterRefinanceOfNordeaLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pshg_NordeaBankSecuredTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pshg_PiraeusBankSecuredTermLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=pshg_PSophiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=pshg_PYanbuMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=pshg_PMontereyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=pshg_PKikumaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pshg_AlphaBankSecuredTermLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt, Secured Term Loans (Details) $ in Thousands			1 Months Ended							12 Months Ended
Long-Term Debt, Secured Term Loans (Details) $ in Thousands	Oct. 19, 2022 USD ($)	Oct. 17, 2022 USD ($)	Dec. 31, 2023 USD ($)	Nov. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Jul. 31, 2022 USD ($)	Dec. 31, 2020 USD ($) Subsidiary	Jul. 31, 2019 USD ($) Subsidiary	Dec. 31, 2023 USD ($) Payment Vessel	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Aug. 04, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Long-Term Debt [Abstract]
Number of tanker vessels used as collateral \| Vessel										4
Net book value of tanker vessels used as collateral			$ 125,200							$ 125,200
Proceeds from loan agreement										2,141	$ 108,633	$ 0
Prepayments of loan	$ 70	$ 4,930								75,421	30,327	$ 7,911
Compensating cash balance required under loan agreements			10,000		$ 10,500					10,000	10,500
Restricted cash, non-current			1,000		1,000					$ 1,000	$ 1,000
Weighted average interest rate										7.60%	4.85%	2.90%
Interest expense on bank debt										$ 8,499	$ 3,191	$ 1,596
Accrued Liabilities [Member]
Long-Term Debt [Abstract]
Accrued interest			294		390					294	390
Interest and Finance Costs [Member]
Long-Term Debt [Abstract]
Interest expense on bank debt										$ 9,039	3,191	$ 1,596
Secured Term Loans [Member] \| SOFR [Member] \| Minimum [Member]
Long-Term Debt [Abstract]
Margin on variable rate										2.35%
Secured Term Loans [Member] \| SOFR [Member] \| Maximum [Member]
Long-Term Debt [Abstract]
Margin on variable rate										2.75%
Secured Term Loans after Refinance of Nordea Loan [Member] \| SOFR [Member] \| Minimum [Member]
Long-Term Debt [Abstract]
Margin on variable rate										2.35%
Secured Term Loans after Refinance of Nordea Loan [Member] \| SOFR [Member] \| Maximum [Member]
Long-Term Debt [Abstract]
Margin on variable rate										2.60%
Nordea Bank Secured Term Loan [Member]
Long-Term Debt [Abstract]
Frequency of loan repayments										quarterly
Number of balloon installment payments \| Payment										1
Number of vessel-owning subsidiaries entering into loan agreement \| Subsidiary									2
Borrowing capacity									$ 33,000				$ 20,000			$ 59,000	$ 47,000
Balance outstanding													$ 17,859
Term										5 years
Proceeds from loan agreement									$ 2,141
Covenant compliance										the Company was in compliance with all of its loan covenants.
Nordea Bank Secured Term Loan [Member] \| Minimum [Member]
Long-Term Debt [Abstract]
Arrangement fee percentage										0.50%
Nordea Bank Secured Term Loan [Member] \| Maximum [Member]
Long-Term Debt [Abstract]
Arrangement fee percentage										1.00%
Piraeus Bank Secured Term Loans [Member]
Long-Term Debt [Abstract]
Frequency of loan repayments										quarterly
Number of balloon installment payments \| Payment										1
Number of vessel-owning subsidiaries entering into loan agreement \| Subsidiary								3
Borrowing capacity						$ 37,400		$ 31,526						$ 31,933
Proceeds from loan agreement						36,450	$ 31,933	$ 29,958
Amount available for drawdown						0									$ 0
Prepayments of loan			27,933
Covenant compliance										the Company was in compliance with all of its loan covenants.
Piraeus Bank Secured Term Loans [Member] \| Minimum [Member]
Long-Term Debt [Abstract]
Arrangement fee percentage										0.50%
Piraeus Bank Secured Term Loans [Member] \| Maximum [Member]
Long-Term Debt [Abstract]
Arrangement fee percentage										1.00%
Piraeus Bank Secured Term Loans [Member] \| P. Sophia [Member]
Long-Term Debt [Abstract]
Acquisition price of vessel to be financed														24,600
Piraeus Bank Secured Term Loans [Member] \| P. Yanbu [Member]
Long-Term Debt [Abstract]
Outstanding indebtedness on vessel to be refinanced														$ 7,333
Piraeus Bank Secured Term Loans [Member] \| P. Monterey [Member]
Long-Term Debt [Abstract]
Acquisition price of vessel to be financed						29,615
Prepayments of loan			$ 16,676
Piraeus Bank Secured Term Loans [Member] \| P. Kikuma [Member]
Long-Term Debt [Abstract]
Outstanding indebtedness on vessel to be refinanced						7,785
Prepayments of loan				$ 13,926
Alpha Bank Secured Term Loans [Member]
Long-Term Debt [Abstract]
Frequency of loan repayments										quarterly
Number of balloon installment payments \| Payment										1
Borrowing capacity					22,000	18,250					$ 22,000
Proceeds from loan agreement					$ 22,000	$ 18,250
Covenant compliance										the Company was in compliance with all of its loan covenants.
Alpha Bank Secured Term Loans [Member] \| Minimum [Member]
Long-Term Debt [Abstract]
Arrangement fee percentage										0.50%
Alpha Bank Secured Term Loans [Member] \| Maximum [Member]
Long-Term Debt [Abstract]
Arrangement fee percentage										1.00%