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Pay vs Performance Disclosure - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Pay vs Performance Disclosure        
Net income attributable to Oppenheimer Holdings Inc. $ 10,266 $ (9,400) $ 36,320 $ 5,217