Significant Accounting Policies - Recent Accounting Pronouncements, Offering Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Offering Expenses [Abstract]
Deferred offering expenses	$ 59	$ 376

Deferred offering expenses related to ongoing equity offerings that have not materialized at the end of the reporting period classified as noncurrent.

No definition available.

Name:	op_DeferredOfferingExpensesNoncurrent
Namespace Prefix:	op_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant