2.4.0.8090500 - Disclosure - Derivative Instruments and Hedging Activities (Details)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$c20130401to20130630_DerivativeByNatureAxis_InterestRateSwapMemberhttp://www.sec.gov/CIK0001083643duration2013-04-01T00:00:002013-06-30T00:00:00U002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170U008Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2false USDfalsefalse$c20120401to20120630_DerivativeByNatureAxis_InterestRateSwapMemberhttp://www.sec.gov/CIK0001083643duration2012-04-01T00:00:002012-06-30T00:00:00U002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$c20130101to20130630_DerivativeByNatureAxis_InterestRateSwapMemberhttp://www.sec.gov/CIK0001083643duration2013-01-01T00:00:002013-06-30T00:00:00U002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170U008Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$4false USDfalsefalse$c20120101to20120630_DerivativeByNatureAxis_InterestRateSwapMemberhttp://www.sec.gov/CIK0001083643duration2012-01-01T00:00:002012-06-30T00:00:00U002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse1false USDtruefalse$c20130401to20130630_DerivativeByNatureAxis_InterestRateSwapMemberhttp://www.sec.gov/CIK0001083643duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseInterest Rate Swap [Member]us-gaap_DerivativeByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_InterestRateSwapMemberus-gaap_DerivativeByNatureAxisexplicitMemberU002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170U008Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$nanafalse0Interest Rate Swap [Member]2true 3us-gaap_DerivativeLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Derivative [Line Items]3false 4us-gaap_DebtInstrumentMaturityDateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse002036-12-31falsefalsetrue2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:dateItemTypedateDate when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 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 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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