XML 105 R91.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Regulatory Requirements - Additional Information (Narrative) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($)
Oppenheimer |
Regulatory Capital Requirements [Line Items] |
Required percentage of net capital to aggregate customer-related debit items | 2.00%
Net capital | $ 142,500,000
Actual percentage of net capital to aggregate customer-related debit items | 13.98%
Excess capital | $ 122,100,000
Freedom |
Regulatory Capital Requirements [Line Items] |
Net capital | 5,800,000
Freedom maintain net capital equal to the greater | $ 100,000
Aggregate indebtedness | 6.67%
Net capital in excess of minimum required | $ 5,700,000
Oppenheimer Europe Ltd |
Regulatory Capital Requirements [Line Items] |
Common Equity Tier 1 Ratio | 11.97%
Common Equity Tier 1 Ratio Required | 4.50%
Tier 1 Capital Ratio | 11.97%
Tier 1 Capital Ratio Required | 6.00%
Total Capital Ratio | 13.40%
Total Capital Ratio Required | 8.00%
Oppenheimer Investments Asia Ltd. |
Regulatory Capital Requirements [Line Items] |
Net capital | $ 2,400,000
Net capital in excess of minimum required | 2,000,000
Regulatory capital required to be maintained | $ 387,000

X
- Definition Actual percentage of net capital to aggregate customer related debit items. + References No definition available. + Details
Name: | opy_ActualPercentageOfNetCapitalToAggregateCustomerRelatedDebitItems
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Equity Tier 1 Ratio calculated for capital adequacy purposes under the Capital Requirements Directive (DRD IV) in the European Union. + References No definition available. + Details
Name: | opy_CommonEquityTierOneRatioUnderCrdFourth
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
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: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Required percentage of net capital to aggregate customer related debit items. + References No definition available. + Details
Name: | opy_RequiredPercentageOfNetCapitalToAggregateCustomerRelatedDebitItems
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | opy_TierOneCapitalRatioCalculatedUnderCrdFourth
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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: | num: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: | num: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: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_AlternativeExcessNetCapital
Namespace Prefix: | us-gaap_
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 No definition available. + Details
Name: | us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of net capital in excess of the 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
Name: | us-gaap_ExcessNetCapitalAt1500Percent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum net capital required to be maintained 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
Name: | us-gaap_MinimumNetCapitalRequired1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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
Name: | us-gaap_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Net capital is equal to the net worth of the broker dealer, less certain items such as exchange memberships, carrying value of securities not readily marketable, haircuts on marketable securities in proprietary accounts, furniture and equipment and other illiquid assets as defined. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
Name: | us-gaap_NetCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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: |