2.4.0.8142 - Disclosure - Derivatives and other Hedging Instruments - Additional Information (Detail)truefalsefalse1false USDfalsefalse$eol_PE763517--1310-Q0007_STD_91_20130630_0http://www.sec.gov/CIK0001419521duration2013-04-01T00:00:002013-06-30T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$eol_PE763517--1310-Q0007_STD_91_20120630_0http://www.sec.gov/CIK0001419521duration2012-04-01T00:00:002012-06-30T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$eol_PE763517--1310-Q0007_STD_181_20130630_0http://www.sec.gov/CIK0001419521duration2013-01-01T00:00:002013-06-30T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$eol_PE763517--1310-Q0007_STD_183_20120630_0http://www.sec.gov/CIK0001419521duration2011-12-31T00:00:002012-06-30T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3us-gaap_DerivativeLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Derivative [Line Items]2false 4us-gaap_DerivativeNetHedgeIneffectivenessGainLossus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse212000212000USD$falsetruefalse2truefalsefalse-169000-169000USD$falsetruefalse3truefalsefalse9600096000USD$falsetruefalse4truefalsefalse-338000-338000USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmount of gain (loss) from the ineffectiveness of the hedge.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 false2Ineffective losses recorded on a current basis in earnings3false 4us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferredus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse113831000113831000USD$falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.No definition available.false2Estimated amount related to derivatives reclassified to interest expense during the next 12 months4false 4us-gaap_DerivativeAverageRemainingMaturity1us-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse0028 monthsfalsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaAverage remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.No definition available.false0Future cash flows for forecasted transactions, average period in months5false 4us-gaap_GainLossOnDerivativeInstrumentsNetPretaxus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse54850005485000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse55360005536000USD$falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 false2Gain recognized due to change in fair value of contracts6false 4us-gaap_DerivativeDescriptionOfTermsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00The Company's total Futures Contracts designed to replicate interest rate swaps had a notional equivalent amount of $800.0 million at June 30, 2013 with a weighted average swap equivalent rate of 1.35% and a weighted average term of 56 months as of June 30, 2013.falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringDescription of the relevant terms of the derivative. Includes the type of instrument, risk being hedged, notional amount, counterparty, inception date, maturity date, relevant interest rates, strike price, cap price, and floor price.No definition available.false0Derivative, description of terms7false 4hts_MaximumLeverageRatioCompanyCanReachBeforeItCouldBeInDefaultOfOneOfItsDerivativeObligationshts_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse0010 to 1falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringMaximum leverage ratio the Company can reach before it could be in default of one of its derivative obligations.No definition available.false0Maximum leverage ratio the Company can reach before it could be in default of one of its derivative obligations8false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5false USDtruefalseeol_PE763517--1310-Q0007_STD_181_20130630_0_751703x716266http://www.sec.gov/CIK0001419521duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseEurodollar Futures Contractshts_DerivativeInstrumentDisclosureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EurodollarFutureMemberhts_DerivativeInstrumentDisclosureAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$nanafalse0Eurodollar Futures Contracts9true 3us-gaap_DerivativeLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Derivative [Line Items]10false 4us-gaap_DerivativeAverageRemainingMaturity1us-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse0056 monthsfalsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaAverage remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.No definition available.false0Future cash flows for forecasted transactions, average period in months11false 4us-gaap_ForeignCurrencyDerivativeAssetsAtFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse55870005587000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse55870005587000USD$falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value as of the balance sheet date of foreign currency derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets on the balance sheet.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 false2Futures contracts - Asset Derivatives found in Other Assets12false 4us-gaap_DerivativeAverageSwaptionInterestRateus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.01350.0135falsefalsefalse2falsefalsefalse00falsefalsefalse3truetruefalse0.01350.0135falsefalsefalse4falsefalsefalse00falsefalsefalsenum:percentItemTypepureAverage fixed interest rate that will be received or paid upon exercise of a group of interest rate swaption contracts.No definition available.false0Weighted average swap equivalent rate13false 4us-gaap_ForeignCurrencyDerivativeLiabilitiesAtFairValueus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities on the balance sheet.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 false2Fair value of derivatives in net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to agreements14false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse6false USDtruefalse$eol_PE763517--1310-Q0007_STD_0_20130630_0_715632x710241_751703x716266http://www.sec.gov/CIK0001419521instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseEurodollar Futures Contractshts_DerivativeInstrumentDisclosureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EurodollarFutureMemberhts_DerivativeInstrumentDisclosureAxisexplicitMemberfalsefalseForeign exchange futureus-gaap_DerivativeInstrumentRiskAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ForeignExchangeFutureMemberus-gaap_DerivativeInstrumentRiskAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Eurodollar Futures Contracts | Foreign exchange future15true 3us-gaap_DerivativeLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Derivative [Line Items]16false 4invest_DerivativeNotionalAmountinvest_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse800000800000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse800000800000USD$falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAggregate notional amount specified by the derivative(s). 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