v3.26.1
Segment information - Narrative (Details)
6 Months Ended
Jun. 30, 2026
Segment Reporting [Abstract]
Number Of Reportable Segments Not Disclosed Flag
reportable segments
X
- Definition
Number Of Reportable Segments Not Disclosed Flag
+ References
No definition available.
+ Details
Name:
opy_NumberOfReportableSegmentsNotDisclosedFlag
Namespace Prefix:
opy_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_SegmentReportingAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration