XML 81 R71.htm IDEA: XBRL DOCUMENT
v3.24.3

Regulatory requirements (Details) - USD ($) |  | 9 Months Ended
--- | --- | ---
Oct. 10, 2024 | Sep. 30, 2024
Regulatory Capital Requirements [Line Items] |  |
Regulatory capital required to be maintained |  | $ 4,150,000
Subsequent Event |  |
Regulatory Capital Requirements [Line Items] |  |
Reduction in net capital | $ 113,000,000 |
Oppenheimer |  |
Regulatory Capital Requirements [Line Items] |  |
Required percentage of net capital to aggregate customer-related debit items (as a percent) |  | 2.00%
Net capital |  | $ 487,500,000
Aggregate indebtedness (as a percent) |  | 42.54%
Excess capital |  | $ 464,600,000
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 |  |
Regulatory Capital Requirements [Line Items] |  |
Common Equity Tier 1 Ratio (as a percent) |  | 94.00%
Common Equity Tier 1 Ratio Required (as a percent) |  | 56.00%
Tier 1 Capital Ratio Required (as a percent) |  | 75.00%
Total Capital Ratio (as a percent) |  | 128.00%
Total Capital Ratio Required (as a percent) |  | 100.00%
Oppenheimer Investments Asia Ltd. |  |
Regulatory Capital Requirements [Line Items] |  |
Net capital |  | $ 3,400,000
Excess Liquid Capital under Hong Kong SFC Rules |  | 3,000,000.0
Regulatory capital required to be maintained |  | $ 386,133

X
- Definition Broker-Deal, Minimum Net Capital Requirement, Parent + References No definition available. + Details
Name: | opy_BrokerDealMinimumNetCapitalRequirementParent
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Broker-Dealer, Increase (Decrease) In Net Capital + References No definition available. + Details
Name: | opy_BrokerDealerIncreaseDecreaseInNetCapital
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Common Equity Tier One Ratio, Actual + References No definition available. + Details
Name: | opy_CommonEquityTierOneRatioActual
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Equity Tier One Ratio required for capital adequacy purposes under the Capital Requirements Directive (DRD IV) in the European Union. + References No definition available. + Details
Name: | opy_CommonEquityTierOneRatioRequiredUnderCrdFourth
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Excess Liquid Capital Under Hong Kong SFC Rules + References No definition available. + Details
Name: | opy_ExcessLiquidCapitalUnderHongKongSFCRules
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Liquid Capital Under Hong Kong SFC Rules + References No definition available. + Details
Name: | opy_LiquidCapitalUnderHongKongSFCRules
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of net capital to aggregate indebtedness. + References No definition available. + Details
Name: | opy_PercentageOfNetCapitalToAggregateIndebtedness
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tier One Capital Ratio required for capital adequacy purposes under the Capital Requirements Directive (DRD IV) in the European Union. + References No definition available. + Details
Name: | opy_TierOneCapitalRatioRequiredUnderCrdFourth
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | opy_TotalCapitalRatioCalculatedUnderCrdFourth
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | opy_TotalCapitalRatioRequiredUnderCrdFourth
Namespace Prefix: | opy_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of net capital in excess of minimum required net capital, calculated under Alternative Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_AlternativeExcessNetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net capital in excess of minimum required net capital, calculated under Aggregate Indebtedness Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_ExcessNetCapitalAt1500Percent
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of net capital required to be maintained by broker-dealer and its subsidiary, calculated under Aggregate Indebtedness Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_MinimumNetCapitalRequired1
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of net capital required to be maintained by broker-dealer subsidiary to engage in security transaction, calculated under Aggregate Indebtedness Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net capital of broker-dealer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_NetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 + Details
Name: | us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryLiabilityAxis=opy_OppenheimerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryLiabilityAxis=opy_FreedomMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryLiabilityAxis=opy_OppenheimerEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryLiabilityAxis=opy_OppenheimerInvestmentsAsiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |