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Significant Accounting Policies - Recent Accounting Pronouncements, Offering Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Offering Expenses [Abstract]
Deferred offering expenses	$ 59	$ 59

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- Definition

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

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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