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Other Income and Loss, Net - Schedule of Other Income and Loss, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other income and loss
Bank interest income	$ 78	$ 80	$ 65
Government grants	16	46	31
Exchange loss	(21)		5
Total	$ 73	$ 126	$ 101

X

- References

No definition available.

+ Details

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- Definition

The amount of other income and loss bank interest income.

+ References

No definition available.

+ Details

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Namespace Prefix:	orhl_
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X

- Definition

The amount of exchange loss.

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

The amount of other income and loss government grants.

+ References

No definition available.

+ Details

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X

- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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