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Significant Accounting Policies - Recent Accounting Pronouncements, Offering Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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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