XML 53 R43.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Fair Value Measurements - Quantitative Information about Level 3 Fair Value Measurements (Details) | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($)
Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 88,525,000
Valuation Adjustment | 1,175,000
Fair Value | $ 87,350,000
Municipal Auction Rate Securities 01 [Member] | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Valuation Technique | Discounted Cash Flow
Municipal Auction Rate Securities [Member] |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Spread To U S Treasury Rate | 175.00%
U S Treasury Rate | 2.38%
Municipal Auction Rate Securities [Member] | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 300,000
Valuation Adjustment | 10,000
Fair Value | $ 290,000
Discount Rate | 4.17%
Duration | 3 years
Fair Value Unobservable Input Current Yield | 3.00%
Municipal Auction Rate Securities [Member] | Weighted Average | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 4.17%
Duration | 3 years
Fair Value Unobservable Input Current Yield | 3.00%
Student Loan Auction Rate Securities |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Spread To U S Treasury Rate | 1.20%
U S Treasury Rate | 2.59%
Student Loan Auction Rate Securities | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 275,000
Valuation Adjustment | 7,000
Fair Value | $ 268,000
Valuation Technique | Discounted Cash Flow
Discount Rate | 3.79%
Duration | 5 years 6 months
Fair Value Unobservable Input Current Yield | 3.23%
Student Loan Auction Rate Securities | Weighted Average | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 3.79%
Duration | 5 years 6 months
Fair Value Unobservable Input Current Yield | 3.23%
Auction rate securities |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 104,551,000
Valuation Adjustment For Level Three Asset and Liability | 1,358,000
Fair Value Of Level Three Assets and Liabilities | $ 103,193,000
Auction Rate Preferred Securities |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
U S Treasury Rate | 2.32%
Auction Rate Preferred Securities | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 87,950,000
Valuation Adjustment | 1,158,000
Fair Value | $ 86,792,000
Valuation Technique | Discounted Cash Flow
Duration | 2 years 6 months
Auction Rate Preferred Securities | Minimum [Member] |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Spread To U S Treasury Rate | 110.00%
Auction Rate Preferred Securities | Minimum [Member] | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 2.56%
Fair Value Unobservable Input Current Yield | 2.15%
Auction Rate Preferred Securities | Maximum [Member] |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Spread To U S Treasury Rate | 150.00%
Auction Rate Preferred Securities | Maximum [Member] | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 3.49%
Fair Value Unobservable Input Current Yield | 2.79%
Auction Rate Preferred Securities | Weighted Average | Auction Rate Securities Owned |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 3.05%
Duration | 2 years 6 months
Fair Value Unobservable Input Current Yield | 2.49%
Auction Rate Securities Purchase Commitment |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 16,026,000
Valuation Adjustment For Level Three Liabilities | 183,000
Fair Value Of Level Three Liabilities | 15,843,000
Auction Rate Securities Purchase Commitment | Municipal Auction Rate Securities [Member] |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | 27,000
Valuation Adjustment For Level Three Liabilities | 1,000
Fair Value Of Level Three Liabilities | $ 26,000
Valuation Technique | Discounted Cash Flow
Discount Rate | 4.17%
Duration | 3 years
Fair Value Unobservable Input Current Yield | 3.00%
Auction Rate Securities Purchase Commitment | Municipal Auction Rate Securities [Member] | Weighted Average |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 4.17%
Duration | 3 years
Fair Value Unobservable Input Current Yield | 3.00%
Auction Rate Securities Purchase Commitment | Student Loan Auction Rate Securities |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 25,000
Valuation Adjustment For Level Three Liabilities | 1,000
Fair Value Of Level Three Liabilities | $ 24,000
Valuation Technique | Discounted Cash Flow
Discount Rate | 3.79%
Duration | 5 years 6 months
Fair Value Unobservable Input Current Yield | 3.23%
Auction Rate Securities Purchase Commitment | Student Loan Auction Rate Securities | Weighted Average |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 3.79%
Duration | 5 years 6 months
Fair Value Unobservable Input Current Yield | 3.23%
Auction Rate Securities Purchase Commitment | Auction Rate Preferred Securities |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Principal | $ 15,974,000
Valuation Adjustment For Level Three Liabilities | 181,000
Fair Value Of Level Three Liabilities | $ 15,793,000
Valuation Technique | Discounted Cash Flow
Duration | 2 years 6 months
Auction Rate Securities Purchase Commitment | Auction Rate Preferred Securities | Minimum [Member] |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 2.56%
Fair Value Unobservable Input Current Yield | 2.15%
Auction Rate Securities Purchase Commitment | Auction Rate Preferred Securities | Maximum [Member] |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 3.49%
Fair Value Unobservable Input Current Yield | 2.79%
Auction Rate Securities Purchase Commitment | Auction Rate Preferred Securities | Weighted Average |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount Rate | 3.05%
Duration | 2 years 6 months
Fair Value Unobservable Input Current Yield | 2.49%

X
- Definition Fair value of the level 3 assets used for the quantitative disclosure. + References No definition available. + Details
Name: | opy_FairValueOfLevelThreeAssets
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair Value Of Level Three Assets and Liabilities + References No definition available. + Details
Name: | opy_FairValueOfLevelThreeAssetsandLiabilities
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair Value Of Level Three Liabilities + References No definition available. + Details
Name: | opy_FairValueOfLevelThreeLiabilities
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 Fair value unobservable inputs duration. + References No definition available. + Details
Name: | opy_FairValueUnobservableInputsDuration
Namespace Prefix: | opy_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount represents the principal amount of the level 3 assets used for the quantitative disclosure. + References No definition available. + Details
Name: | opy_LevelThreePrincipalAmount
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Spread represents ARS maximum formula which is used to discount for the lack of liquidity as a result of ARS failed auction. + References No definition available. + Details
Name: | opy_SpreadToUSTreasuryRate
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Specific period of US Treasury rate as of reporting period. + References No definition available. + Details
Name: | opy_USTreasuryRate
Namespace Prefix: | opy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Valuation adjustment for the level 3 assets used for quantitative disclosure. + References No definition available. + Details
Name: | opy_ValuationAdjustmentForLevelThreeAssets
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Valuation Adjustment For Level Three Liabilities + References No definition available. + Details
Name: | opy_ValuationAdjustmentForLevelThreeLiabilities
Namespace Prefix: | opy_
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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementsValuationTechniques
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=opy_MunicipalAuctionRateSecurities01Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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