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Regulatory Requirements - Additional Information (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2017 USD ($)
Oppenheimer |
Regulatory Capital Requirements [Line Items] |
Required percentage of net capital to aggregate customer-related debit items | $ 0.02
Net Capital as Reported in Entity's Part II Unaudited FOCUS Report | 142,000,000
Excess capital | $ 121,700,000
Aggregate indebtedness | 14.00%
Freedom |
Regulatory Capital Requirements [Line Items] |
Net Capital as Reported in Entity's Part II Unaudited FOCUS Report | $ 5,300,000
Freedom maintain net capital equal to the greater | $ 100,000
Aggregate indebtedness | 6.67%
Net capital in excess of minimum required | $ 5,200,000
Oppenheimer Investments Asia Ltd. |
Regulatory Capital Requirements [Line Items] |
Net capital | 1,600,000
Excess Liquid Capital under Hong Kong SFC Rules | 1,200,000
Regulatory capital required to be maintained | $ 387,000
Basel Three New Requirements [Member] | Oppenheimer Europe Ltd |
Regulatory Capital Requirements [Line Items] |
Common Equity Tier 1 Ratio | 27.27%
Common Equity Tier 1 Ratio Required | 4.50%
Tier 1 Capital Ratio | 27.27%
Tier 1 Capital Ratio Required | 6.00%
Total Capital Ratio | 28.79%
Total Capital Ratio Required | 8.00%

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- Definition Excess Liquid Capital under Hong Kong SFC Rules + References No definition available. + Details
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- Definition Percentage of net capital to aggregate indebtedness. + References No definition available. + Details
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- Definition Tier One Capital Ratio calculated for capital adequacy purposes under the Capital Requirements Directive (DRD IV) in the European Union. + References No definition available. + Details
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- Definition Total Capital Ratio calculated for capital adequacy purposes under the Capital Requirements Directive (DRD IV) in the European Union. + References No definition available. + Details
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- Definition Total Capital Ratio Required for capital adequacy purposes under the Capital Requirements Directive (DRD IV) in the European Union. + References No definition available. + Details
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- Definition The amount of net capital in excess of the alternative minimum required net capital. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
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- Definition Minimum amount of net capital required to be maintained by entity's broker-dealer subsidiary to engage in securities transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
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- Definition This element represents the amount of net capital of a broker or dealer that has elected not to be subject to the Aggregate Indebtedness Standard (as defined). The amount of net capital represented by this element is the greater of $250,000 or two percent of aggregate debit items computed in accordance with the Formula for Determination of Reserve Requirements for Brokers and Dealers (as defined). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
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