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Earnings per share (Tables) | 3 Months Ended
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Mar. 31, 2024
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share | Earnings per share have been calculated as follows:
(Expressed in thousands, except number of shares and per share amounts) |  |  |  |  |  |
| For the Three Months Ended March 31, |  |
| 2024 |  | 2023 |  |  |  |
Basic weighted average number of shares outstanding | 10,407,454 |  |  | 11,092,603 |  |  |  |  |
Net dilutive effect of share-based awards, treasury stock method (1) | 594,215 |  |  | 870,889 |  |  |  |  |
Diluted weighted average number of shares outstanding | 11,001,669 |  |  | 11,963,492 |  |  |  |  |
Net income attributable to Oppenheimer Holdings Inc. | $ | 26,054 |  |  | $ | 14,617 |  |  |  |  |
Earnings per share attributable to Oppenheimer Holdings Inc. |  |  |  |  |  |
Basic | $ | 2.50 |  |  | $ | 1.32 |  |  |  |  |
Diluted | $ | 2.37 |  |  | $ | 1.22 |  |  |  |  |
(1) For the three months ended March 31, 2024, there was no shares of Class A Stock with an anti-dilutive effect granted under share-based compensation arrangements. For the three months ended March 31, 2023, the diluted net income per share computation did not include the anti-dilutive effect of 282,360 shares of Class A Stock granted under share-based compensation arrangements.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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