XML 47 R69.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Fair Value Measurements - Additional Information (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Jun. 23, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Auction Rate Securities Valuation Adjustment | $ 5,100,000 |  |
Auction Rate Securities Purchased as a Result of Settlements with Regulators | 140,200,000 |  |
Auction Rate Securities Committed To Purchase related to settlements with regulators | 3,500,000 |  |
Auction Rate Securities Purchased as a result of Legal Settlements and Awards | 102,300,000 |  |
Auction Rate Securities Committed To Purchase as a Result of Legal Settlements and Awards | 3,700,000 |  |
Securities owned, at fair value | $ 799,719,000 | $ 837,584,000 |
Loan position held in secondary loan trading portfolio |  | 0 |
Forward or delayed delivery of the underlying instrument with settlement | 180 days |  |
Auction Rate Securities Purchased And Hold | $ 29,400,000 |  |
Equity Securities [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Securities owned, at fair value | 32,215,000 | 28,215,000 |
Auction rate securities |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Securities owned, at fair value | 25,314,000 | 37,952,000 |
Auction Rate Securities Owned |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
ARS Valuation Adjustment For Level Two and Three Assets | 4,100,000 |  |
Auction rate securities |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net | $ (21,350,000) | (37,675,000) |
Auction rate securities | Maximum [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Commitment to purchase ARS period maximum | 2020 |  |
Auction Rate Securities Purchase Commitment |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |  | 1,096,000 |
Hedge Funds [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Investment Redemption Notice Period Minimum | 30 days |  |
Investment Redemption Notice Period Maximum | 120 days |  |
Auction Rate Preferred Securities | Minimum [Member] | Auction Rate Securities Owned |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value Input, Discount Rate | 2.86% |  |
Fair Value Unobservable Input Current Yield | 2.69% |  |
Auction Rate Preferred Securities | Maximum [Member] | Auction Rate Securities Purchase Commitment |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value Unobservable Input Current Yield | 4.05% |  |
Auction Rate Preferred Securities | Maximum [Member] | Auction Rate Securities Owned |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value Input, Discount Rate | 3.89% |  |
Other Assets | Auction Rate Preferred Securities | Minimum [Member] | Auction Rate Securities Purchase Commitment |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value Input, Discount Rate | 2.86% |  |
Fair Value Unobservable Input Current Yield | 2.69% |  |
Other Assets | Auction Rate Preferred Securities | Maximum [Member] | Auction Rate Securities Purchase Commitment |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value Input, Discount Rate | 3.89% |  |
Fair Value Unobservable Input Current Yield | 4.05% |  |
Level 2 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Securities owned, at fair value | $ 133,776,000 |  |
Level 2 | Auction rate securities |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Securities owned, at fair value | 25,314,000 | $ 16,253,000 |
6.75% Senior Secured Notes [Member] | Senior Secured Notes |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Interest rate |  |  | 6.75%
Auction Rate Securities Purchase Commitment |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Auction Rate Securities Valuation Adjustment | $ 1,000,000 |  |

X
- Definition ARS Valuation Adjustment For Level Two and Three Assets + References No definition available. + Details
Name: | opy_ARSValuationAdjustmentForLevelTwoandThreeAssets
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Auction Rate Securities Committed To Purchase as a Result of Legal Settlements and Awards + References No definition available. + Details
Name: | opy_AuctionRateSecuritiesCommittedToPurchaseasaResultofLegalSettlementsandAwards
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Auction Rate Securities Committed To Purchase related to settlements with regulators + References No definition available. + Details
Name: | opy_AuctionRateSecuritiesCommittedToPurchaserelatedtosettlementswithregulators
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Auction Rate Securities Purchased And Hold + References No definition available. + Details
Name: | opy_AuctionRateSecuritiesPurchasedAndHold
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Auction Rate Securities Purchased as a Result of Settlements with Regulators + References No definition available. + Details
Name: | opy_AuctionRateSecuritiesPurchasedasaResultofSettlementswithRegulators
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Auction Rate Securities Purchased as a result of Legal Settlements and Awards + References No definition available. + Details
Name: | opy_AuctionRateSecuritiesPurchasedasaresultofLegalSettlementsandAwards
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Auction Rate Securities Valuation Adjustment + References No definition available. + Details
Name: | opy_AuctionRateSecuritiesValuationAdjustment
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair Value Input, Discount Rate + References No definition available. + Details
Name: | opy_FairValueInputDiscountRate
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value unobservable input current yield. + References No definition available. + Details
Name: | opy_FairValueUnobservableInputCurrentYield
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Investment redemption notice period maximum. + References No definition available. + Details
Name: | opy_InvestmentRedemptionNoticePeriodMaximum
Namespace Prefix: | opy_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment redemption notice period minimum. + References No definition available. + Details
Name: | opy_InvestmentRedemptionNoticePeriodMinimum
Namespace Prefix: | opy_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loan position held in secondary loan trading portfolio fair value. + References No definition available. + Details
Name: | opy_LoanPositionHeldInSecondaryLoanTradingPortfolioFairValue
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum settlement period in case of delayed delivery of underlying instrument. + References No definition available. + Details
Name: | opy_MaximumSettlementPeriodInCaseOfDelayedDeliveryOfUnderlyingInstrument
Namespace Prefix: | opy_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Securities committed to purchase period. + References No definition available. + Details
Name: | opy_SecuritiesCommittedToPurchasePeriod
Namespace Prefix: | opy_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedFairValueSecurityOwned
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=us-gaap_AuctionRateSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=opy_AuctionRateSecuritiesOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AuctionRateSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=opy_AuctionRateSecuritiesPurchaseCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_HedgeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_AuctionRatePreferredSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=opy_AuctionRateSecuritiesPurchaseCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=opy_A6.75SeniorSecuredNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=opy_AuctionRateSecuritiesPurchaseCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |