XML 103 R51.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Financial instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents | $ 58,945 | $ 30,924
Cash and securities segregated for regulatory and other purposes | 11,499 | 11,500
Deposits with clearing organization | 9,095 | 9,095
Securities owned: |  |
Securities owned, at fair value | 759,742 | 924,541
Investments | 12,109 |
Investments | 258 | 26
Derivative contracts | 3,057 | 2,421
TBAs | 175 | 2,254
Total | 176,940 | 74,116
Derivative contracts |  | 20
TBAs | 3,188 | 5,791
Securities purchased under agreements to resell |  | 847,610
Total | 902,988 | 1,876,439
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 173,450 | 69,415
Other [Member] |  |
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 425 | 122
U.S. Treasury obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 497,546 | 627,870
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 131,899 | 27,462
U.S. Agency obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 27,690 | 54,358
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 31 | 47
Sovereign obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 19 | 577
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value |  |
Corporate debt and other obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 14,428 | 27,188
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 1,858 | 3,696
Mortgage and other asset-backed securities [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 2,920 | 4,609
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 18 | 14
Municipal obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 59,010 | 54,963
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 467 | 485
Convertible bonds [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 49,130 | 50,157
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 8,868 | 8,533
Corporate Securities [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 43,708 | 38,634
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 29,884 | 29,056
Other [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 65,291 | 66,185
Other [Member] |  |
Securities owned: |  |
Investments | 60,519 | 46,958
Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash equivalents | 58,945 | 30,924
Cash and securities segregated for regulatory and other purposes | 11,499 | 11,500
Deposits with clearing organization | 9,095 | 9,095
Securities owned: |  |
Securities owned, at fair value | 534,291 | 703,405
Investments | 258 | 26
Derivative contracts | 286 | 66
Total | 153,714 | 44,093
Total | 624,307 | 756,436
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 153,170 | 44,001
Level 1 [Member] | Other [Member] |  |
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 325 | 72
Level 1 [Member] | U.S. Treasury obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 497,546 | 627,870
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 131,899 | 27,462
Level 1 [Member] | U.S. Agency obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value |  | 32,663
Level 1 [Member] | Sovereign obligations [Member] |  |
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value |  |
Level 1 [Member] | Corporate debt and other obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 2,459 | 12,538
Level 1 [Member] | Corporate Securities [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 31,958 | 29,150
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 20,946 | 16,467
Level 1 [Member] | Other [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 2,328 | 1,184
Level 1 [Member] | Other [Member] |  |
Securities owned: |  |
Investments | 10,477 | 1,512
Level 2 [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 153,054 | 152,557
Derivative contracts | 124 | 8
TBAs | 175 | 2,254
Total | 20,479 | 27,626
Derivative contracts |  | 20
TBAs | 3,188 | 5,791
Securities purchased under agreements to resell |  | 847,610
Total | 193,330 | 1,038,942
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 20,180 | 25,364
Level 2 [Member] | U.S. Agency obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 27,690 | 21,695
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 31 | 47
Level 2 [Member] | Sovereign obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 19 | 577
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value |  |
Level 2 [Member] | Corporate debt and other obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 11,969 | 14,650
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 1,858 | 3,696
Level 2 [Member] | Mortgage and other asset-backed securities [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 2,880 | 4,593
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 18 | 14
Level 2 [Member] | Municipal obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 49,616 | 51,401
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 467 | 485
Level 2 [Member] | Convertible bonds [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 49,130 | 50,157
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 8,868 | 8,533
Level 2 [Member] | Corporate Securities [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 11,750 | 9,484
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 8,938 | 12,589
Level 2 [Member] | Other [Member] |  |
Securities owned: |  |
Investments | 37,088 | 32,964
Level 3 [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 72,397 | 68,579
Derivative contracts | 2,647 | 2,347
Total | 2,747 | 2,397
Total | 85,351 | 81,061
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 100 | 50
Level 3 [Member] | Other [Member] |  |
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value | 100 | 50
Level 3 [Member] | Sovereign obligations [Member] |  |
Securities sold, not yet purchased: |  |
Securities sold, but not yet purchased at fair value |  |
Level 3 [Member] | Mortgage and other asset-backed securities [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 40 | 16
Level 3 [Member] | Municipal obligations [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 9,394 | 3,562
Level 3 [Member] | Other [Member] |  |
Securities owned: |  |
Securities owned, at fair value | 62,963 | 65,001
Level 3 [Member] | Other [Member] |  |
Securities owned: |  |
Investments | $ 12,954 | $ 12,482

X
- Definition Cash and securities segregated under other regulations measure at fair value. + References No definition available. + Details
Name: | opy_CashAndSecuritiesSegregatedUnderOtherRegulationsMeasureAtFairValue
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deposits With Clearing Organizations Fair Value + References No definition available. + Details
Name: | opy_DepositsWithClearingOrganizationsFairValue
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value purchases of to be announced securities. + References No definition available. + Details
Name: | opy_FairValuePurchasesOfToBeAnnouncedSecurities
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value sale of to be announced securities. + References No definition available. + Details
Name: | opy_FairValueSaleOfToBeAnnouncedSecurities
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + 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 (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 8, 9, 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FIN39-1 -Paragraph 10A, 10B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 4, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FIN39-1 -Paragraph 10A, 10B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 4, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. The amount shown on an entity's books for federal funds sold and securities borrowed or purchased under agreements to resell. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 4 -IssueDate 2006-05-01 -Chapter 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InvestmentOwnedBalanceAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=16383099&loc=d3e24584-111560 + Details
Name: | us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + 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 (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. The amount shown on an entity's books for liabilities related to investment contracts (guaranteed investment contract, annuities), net of any reductions or offsets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 825 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6487514&loc=d3e32427-158581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 14 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 97 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
Name: | us-gaap_MarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_SecuritiesOwnedAndSoldNotYetPurchasedAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents securities sold but not yet purchased, that is, sold short, which leads to a liability for the obligation to purchase said securities at a future date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6957929&loc=d3e63862-112815 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 38, 39 -IssueDate 2006-05-01 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_SecuritiesSoldNotYetPurchasedFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant