XML 115 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Financial Instruments - Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Investments [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | $ 12,779 | $ 13,132 | $ 12,954 | $ 12,482
Total Realized and Unrealized Gains (Losses) |  | (78) | 623 | 437
Purchases and Issuances | 292 | 3 | 125 | 127
Sales and Settlements | 2 | (297) | (728) | (297)
Transfers In (Out) | (99) |  |  | 11
Ending Balance | 12,974 | 12,760 | 12,974 | 12,760
Other [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 100 |  | 100 | 50
Total Realized and Unrealized Gains (Losses) |  |  |  |
Purchases and Issuances | (100) |  | (100) | (50)
Sales and Settlements |  |  |  |
Transfers In (Out) |  |  |  |
Ending Balance |  |  |  |
Derivative Contracts [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 2,094 | 3,907 | 2,647 | 2,347
Total Realized and Unrealized Gains (Losses) | 235 | (1,573) | (318) | (13)
Ending Balance | 2,329 | 2,334 | 2,329 | 2,334
Mortgage and Other Asset-Backed Securities [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 52 | 98 | 40 | 16
Total Realized and Unrealized Gains (Losses) | 7 | (23) | 14 | (6)
Purchases and Issuances | 50 | 3 | 73 | 83
Sales and Settlements | (36) | (64) | (54) | (79)
Transfers In (Out) | (6) | (2) | (6) | (2)
Ending Balance | 67 | 12 | 67 | 12
Municipal Obligations [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 10,303 | 11,789 | 9,394 | 3,562
Total Realized and Unrealized Gains (Losses) | 1,066 | 581 | 925 | (497)
Purchases and Issuances | 250 |  | 1,450 | 9,305
Sales and Settlements | (50) | (2,250) | (200) | (2,250)
Ending Balance | 11,569 | 10,120 | 11,569 | 10,120
Other [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 62,489 | 66,831 | 62,963 | 65,001
Total Realized and Unrealized Gains (Losses) | (571) | 738 | (1,120) | (761)
Purchases and Issuances | 5,925 | 4,425 | 8,975 | 14,725
Sales and Settlements | (1,100) | (7,350) | (4,075) | (14,321)
Ending Balance | $ 66,743 | $ 64,644 | $ 66,743 | $ 64,644

X
- Definition Fair value assets measured on recurring basis change in realized and unrealized gain (loss) included in other income. + References No definition available. + Details
Name: | opy_FairValueAssetsMeasuredOnRecurringBasisChangeInRealizedAndUnrealizedGainLossIncludedInOtherIncome
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value liabilities measured on recurring basis change in realized and unrealized gain (loss) included in other income. + References No definition available. + Details
Name: | opy_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInRealizedAndUnrealizedGainLossIncludedInOtherIncome
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value measurement with unobservable inputs reconciliation recurring basis asset purchases sales issuances settlements. + References No definition available. + Details
Name: | opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesIssuances
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value measurement with unobservable inputs reconciliation recurring basis asset sales settlements. + References No definition available. + Details
Name: | opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesSettlements
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liabilities purchases issuances. + References No definition available. + Details
Name: | opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesPurchasesIssuances
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liabilities sales settlements. + References No definition available. + Details
Name: | opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesSalesSettlements
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
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 instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + 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 (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + 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 (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant