XML 71 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9

Fair Value Measurements - Fair Value Amounts of Derivative Instruments and their Effect on Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	$ 1,684opy_GainLossOnDerivativesPreTaxRecognizedInIncome	$ 1,473opy_GainLossOnDerivativesPreTaxRecognizedInIncome
Commodity Contracts | U.S. treasury futures | Principal Transaction Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	(1,687)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_UsTreasuryFuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember	906opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_UsTreasuryFuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember
Commodity Contracts | Federal funds futures | Principal Transaction Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	(272)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_FederalFundsFuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember	(289)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_FederalFundsFuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember
Commodity Contracts | Euro Dollars Futures | Principal Transaction Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	(161)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_EuroDollarsFuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember	5opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_EuroDollarsFuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember
Commodity Contracts | General collateral futures | Principal Transaction Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	11opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_GeneralcollateralfuturesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember
Other Contracts | Other
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	10opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember
Other Contracts | Other | TBA Sale Agreements
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	(5,530)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = opy_TbaSaleAgreementsMember	2,021opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = opy_TbaSaleAgreementsMember
Other Contracts | Other | Interest rate lock commitments
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	7,632opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_FinancialInstrumentAxis = us-gaap_InterestRateLockCommitmentsMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember	(1,277)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_FinancialInstrumentAxis = us-gaap_InterestRateLockCommitmentsMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember
Other Contracts | TBAs | Principal Transaction Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	(17)opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_ToBeAnnouncedSecurityMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember	61opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeByNatureAxis = opy_ToBeAnnouncedSecurityMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember
Other Contracts | Auction Rate Securities Purchase Commitment | Principal Transaction Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)	1,698opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_FairValueByLiabilityClassAxis = opy_AuctionRateSecuritiesPurchaseCommitmentMember / us-gaap_IncomeStatementLocationAxis = us-gaap_PrincipalOrProprietaryTransactionsMember
Other Contracts | Auction Rate Securities Purchase Commitment | Other
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Income on Derivatives (pre-tax) Gain (Loss)		$ 46opy_GainLossOnDerivativesPreTaxRecognizedInIncome / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_OtherContractMember / us-gaap_FairValueByLiabilityClassAxis = opy_AuctionRateSecuritiesPurchaseCommitmentMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember

X

- Definition

Gain (loss) on derivatives pre tax recognized in income.

+ References

No definition available.

+ Details

Name:	opy_GainLossOnDerivativesPreTaxRecognizedInIncome
Namespace Prefix:	opy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_OtherContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: