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Deposits Paid for Non-Current Assets - Schedule of Deposits Paid for Non-Current Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Deposits paid for: |  |
Acquisition of property, plant and equipment |  | $ 103
Equity investment | 2,345 |
Total deposits | $ 2,345 | $ 103

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- Definition Acquisition of property, plant and equipment. + References No definition available. + Details
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Namespace Prefix: | orhl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Equity investment. + References No definition available. + Details
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Namespace Prefix: | orhl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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