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Leases - Schedule of Right of Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Schedule of Right of Use Assets and Lease Liabilities [Line Items] |  |
Right-of-use assets, Beginning balance | $ 164 | $ 186
Lease liabilities, Beginning balance | 196 | 216
Right-of-use assets, Depreciation expense | (19) | (17)
Lease liabilities, Depreciation expense |  |
Right-of-use assets, Interest expense |  |
Lease liabilities, Interest expense | 12 | 13
Right-of-use assets, Payment |  |
Lease liabilities, Payment | (29) | (28)
Right-of-use assets, Exchange adjustments | 6 | (5)
Lease liabilities, Exchange adjustments | 8 | (5)
Right-of-use assets, Ending balance | 151 | 164
Lease liabilities, Ending balance | $ 187 | $ 196

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- Definition Lease liabilities. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of tease liabilities, depreciation expense. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The amount of lease liabilities, exchange adjustments. + References No definition available. + Details
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Balance Type: | credit
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- Definition The amount of lease liabilities, interest expense. + References No definition available. + Details
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Namespace Prefix: | orhl_
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Balance Type: | credit
Period Type: | duration

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- Definition The value of right-of-use assets, depreciation expense. + References No definition available. + Details
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- Definition Represent the amount of right of use assets exchange adjustments. + References No definition available. + Details
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- Definition The amount of right-of-use assets, Interest expense. + References No definition available. + Details
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Balance Type: | debit
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- Definition The amount of right-of-use assets, payment. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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