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Regulatory requirements (Details) | 12 Months Ended
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Dec. 31, 2024 USD ($)
Regulatory Capital Requirements [Line Items] |
Minimum capital required | $ 4,150,000
Oppenheimer |
Regulatory Capital Requirements [Line Items] |
Required percentage of net capital to aggregate customer-related debit items (as a percent) | 2.00%
Net capital | $ 381,400,000
Aggregate indebtedness (as a percent) | 32.48%
Excess capital | $ 357,900,000
Freedom |
Regulatory Capital Requirements [Line Items] |
Net capital | $ 3,800,000
Aggregate indebtedness (as a percent) | 6.67%
Freedom maintain net capital equal to the greater | $ 100,000
Net capital in excess of minimum required | $ 3,700,000
Oppenheimer Europe Ltd | Basel Three New Requirements |
Regulatory Capital Requirements [Line Items] |
Common Equity Tier 1 ratio (as a percent) | 182.00%
Common Equity Tier 1 ratio required (as a percent) | 56.00%
Tier 1 Capital ratio (as a percent) | 182.00%
Tier 1 Capital ratio required (as a percent) | 75.00%
Total Capital ratio (as a percent) | 243.00%
Total Capital ratio required (as a percent) | 100.00%
Oppenheimer Investments Asia Ltd. |
Regulatory Capital Requirements [Line Items] |
Regulatory capital | $ 3,300,000
Excess Liquid Capital under Hong Kong SFC rules | 2,900,000
Regulatory capital required to be maintained | $ 386,200

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