Recent Accounting Pronouncements and Significant Accounting Policies, Revenues and Voyage Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Recent Accounting Pronouncements and Significant Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 147	$ 0	$ 0

Allowance for doubtful accounts deriving from the collectability assessment of accounts receivable, recorded as a direct reduction to lease income.

No definition available.

Name:	pshg_LeaseIncomeAllowanceForDoubtfulAccounts
Namespace Prefix:	pshg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration