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v2.4.1.9

Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Allowance for credit losses | $ 2,439 us-gaap_AllowanceForDoubtfulAccountsReceivable | $ 2,427 us-gaap_AllowanceForDoubtfulAccountsReceivable
Amounts pledged | 501,643 us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue | 518,123 us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
Net accumulated depreciation | 105,809 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 103,547 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Deferred Tax Assets, Gross | 62,254 us-gaap_DeferredTaxAssetsGross | 68,622 us-gaap_DeferredTaxAssetsGross
Notes Receivable, Accumulated Amortization | 35,596 opy_NotesReceivableAccumulatedAmortization | 42,211 opy_NotesReceivableAccumulatedAmortization
Notes Receivable, Allowance for Credit Losses | $ 9,062 opy_NotesReceivableAllowanceforCreditLosses | $ 8,606 opy_NotesReceivableAllowanceforCreditLosses
Class A Stock [Member] |  |
Common Stock, Shares Authorized | 50,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 50,000,000 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common stock, shares issued | 13,634,831 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 13,530,688 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common stock, shares outstanding | 13,634,831 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | 13,530,688 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common Stock, Par or Stated Value Per Share | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Class B Stock [Member] |  |
Common Stock, Shares Authorized | 99,680 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember | 99,680 us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Common stock, shares issued | 99,680 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember | 99,680 us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Common stock, shares outstanding | 99,680 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember | 99,680 us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Common Stock, Par or Stated Value Per Share | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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