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Contingent Liabilities (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Contingent Liabilities [Abstract] |  |
Contingent liabilities |  |

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- Definition Contingent liabilities. + References No definition available. + Details
Name: | orhl_ContingentLiabilities
Namespace Prefix: | orhl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration