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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2023
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 Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Basic weighted average number of shares outstanding | 10,736,166 |  |  | 11,666,194 |  |  | 12,642,306 |
Net dilutive effect of share-based awards, treasury stock method (1) | 909,542 |  |  | 941,558 |  |  | 940,522 |
Diluted weighted average number of shares outstanding | 11,645,708 |  |  | 12,607,752 |  |  | 13,582,828 |
Net income attributable to Oppenheimer Holdings Inc. | $ | 30,179 |  |  | $ | 32,351 |  |  | $ | 158,964 |
Earnings per share attributable to Oppenheimer Holdings Inc. |  |  |  |  |
Basic | $ | 2.81 |  |  | $ | 2.77 |  |  | $ | 12.57 |
Diluted | $ | 2.59 |  |  | $ | 2.57 |  |  | $ | 11.70 |
(1)For the year ended December 31, 2023, the diluted net income per share computation did not include the anti-dilutive effect of 115,950 shares of Class A Stock granted under share-based compensation arrangements. For the year ended December 31, 2022, the diluted net income per share computation did not include the anti-dilutive effect of 4,100 shares of Class A Stock granted under share-based compensation arrangements. For the year ended December 31, 2021, there was no Class A Stock granted under share-based compensation arrangements that were anti-dilutive.

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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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