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Bank call loans (Tables) | 12 Months Ended
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Dec. 31, 2023
Bank Call Loans [Abstract] |
Schedule of Bank Call Loans | Details of the bank call loans are as follows:
(Expressed in thousands, except percentages) |  |  |
| 2023 |  | 2022
Year-end balance | $ | — |  |  | $ | — |
Weighted interest rate (at end of year) | — | % |  | — | %
Maximum balance (at any month-end) | 131,900 |  |  | 179,200 |
Average amount outstanding (during the year) | 49,387 |  |  | 79,366 |
Average interest rate (during the year) | 4.20 | % |  | 2.18 | %

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- Definition Bank Call Loans [Abstract] + References No definition available. + Details
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Namespace Prefix: | opy_
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Balance Type: | na
Period Type: | duration

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- Definition Schedule of bank call loans. + References No definition available. + Details
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Namespace Prefix: | opy_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration