2.4.0.84062 - Disclosure - Borrowings under Repurchase Agreements (Details 3)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalseD2013Q2YTD_JPMorganSecuritiesLLCMemberhttp://www.sec.gov/CIK0001465885duration2013-01-01T00:00:002013-06-30T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse1false USDtruefalseD2013Q2YTD_JPMorganSecuritiesLLCMemberhttp://www.sec.gov/CIK0001465885duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseJP Morgan Securities LLCus-gaap_CounterpartyNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmc_JPMorganSecuritiesLLCMemberus-gaap_CounterpartyNameAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$nanafalse0JP Morgan Securities LLC2true 3us-gaap_RepurchaseAgreementCounterpartyLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Amounts at risk under its repurchase agreements greater than 10% of the Company's equity with any counterparty3false 4us-gaap_RepurchaseAgreementCounterpartyAmountAtRiskus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse6086900060869USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe amount at risk under repurchase agreements is defined as the excess of carrying amount (or market value, if higher than the carrying amount or if there is no carrying amount) of the securities or other assets sold under agreement to repurchase, including accrued interest plus any cash or other assets on deposit to secure the repurchase obligation, over the amount of the repurchase liability (adjusted for accrued interest).Reference 1: http://www.xbrl.org/2003/role/presentationRef 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USDtruefalseD2013Q2YTD_CreditSuisseSecuritiesUSALLCMemberhttp://www.sec.gov/CIK0001465885duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseCredit Suisse Securities (USA) LLCus-gaap_CounterpartyNameAxisxbrldihttp://xbrl.org/2006/xbrldiwmc_CreditSuisseSecuritiesUSALLCMemberus-gaap_CounterpartyNameAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$nanafalse0Credit Suisse Securities (USA) LLC7true 3us-gaap_RepurchaseAgreementCounterpartyLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Amounts at risk under its repurchase agreements greater than 10% of the Company's equity with any counterparty8false 4us-gaap_RepurchaseAgreementCounterpartyAmountAtRiskus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse5490300054903USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount at risk under repurchase agreements is defined as the excess of carrying amount (or market value, if higher than the carrying amount or if there is no carrying amount) of the securities or other assets sold under agreement to repurchase, including accrued interest plus any cash or other assets on deposit to secure the repurchase obligation, over the amount of the repurchase liability (adjusted for accrued interest).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph m -Subparagraph 1 -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(B)(iii)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 false2Amounts at Risk, at fair value9false 4us-gaap_RepurchaseAgreementCounterpartyWeightedAverageMaturityOfAgreements1us-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse0013 daysfalsefalsefalsexbrli:durationItemTypenaWeighted average maturity (weighted by amount of the agreement) of repurchase agreements with the counterparty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph m -Subparagraph 1 -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(B)(iii)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 false0Weighted Average Remaining Maturity10false 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3us-gaap_RepurchaseAgreementCounterpartyLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Amounts at risk under its repurchase agreements greater than 10% of the Company's equity with any counterparty13false 4us-gaap_RepurchaseAgreementCounterpartyAmountAtRiskus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse4357300043573USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe amount at risk under repurchase agreements is defined as the excess of carrying amount (or market value, if higher than the carrying amount or if there is no carrying amount) of the securities or other assets sold under agreement to repurchase, including accrued interest plus any cash or other assets on deposit to secure the repurchase obligation, over the amount of the repurchase liability (adjusted for accrued interest).Reference 1: http://www.xbrl.org/2003/role/presentationRef 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