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v3.24.2.u1

Derivative Warrant Liabilities (Details) - shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Derivative Warrant Liabilities [Line Items] |  |
Private Warrants outstanding | 343,125 | 343,125

X
- References No definition available. + Details
Name: | oaku_DerivativeWarrantLiabilitiesDetailsLineItems
Namespace Prefix: | oaku_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares in sale of private placement units + References No definition available. + Details
Name: | oaku_StockIssuedDuringPeriodShareSaleOfPrivatePlacementUnitsinShares
Namespace Prefix: | oaku_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration