Recent Accounting Pronouncements and Significant Accounting Policies, Assets Held for Sale (Details)	12 Months Ended
Dec. 31, 2023
Assets Held for Sale [Abstract]
Transfer of disposal group asset is expected to qualify for recognition period	1 year

Transfer of disposal group asset is expected to qualify for recognition as a completed sale period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pshg_TransferOfDisposalGroupAssetIsExpectedToQualifyForRecognitionCompletionOfSalePeriod
Namespace Prefix:	pshg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration