2.4.0.84023 - Disclosure - Significant Accounting Policies (Details 4)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$D2012http://www.sec.gov/CIK0001492869duration2012-01-01T00:00:002012-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDtruefalse$D2013Q2_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberhttp://www.sec.gov/CIK0001492869duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseDebt and Preferred Equity Investments Held to Maturityinvest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldislgop_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberinvest_InvestmentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDtruefalse$D2012Q2_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberhttp://www.sec.gov/CIK0001492869duration2012-04-01T00:00:002012-06-30T00:00:00falsefalseDebt and Preferred Equity Investments Held to Maturityinvest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldislgop_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberinvest_InvestmentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDtruefalse$D2013Q2YTD_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberhttp://www.sec.gov/CIK0001492869duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseDebt and Preferred Equity Investments Held to Maturityinvest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldislgop_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberinvest_InvestmentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false USDtruefalse$D2012Q2YTD_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberhttp://www.sec.gov/CIK0001492869duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseDebt and Preferred Equity Investments Held to Maturityinvest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldislgop_DebtAndPreferredEquityInvestmentsHeldToMaturityMemberinvest_InvestmentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6false USDtruefalse$D2012Q2_DebtAndPreferredEquityInvestmentsHeldForSaleMemberhttp://www.sec.gov/CIK0001492869duration2012-04-01T00:00:002012-06-30T00:00:00falsefalseDebt and Preferred Equity Investments Held for Saleinvest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldislgop_DebtAndPreferredEquityInvestmentsHeldForSaleMemberinvest_InvestmentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7false USDtruefalse$D2012Q2YTD_DebtAndPreferredEquityInvestmentsHeldForSaleMemberhttp://www.sec.gov/CIK0001492869duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseDebt and Preferred Equity Investments Held for Saleinvest_InvestmentAxisxbrldihttp://xbrl.org/2006/xbrldislgop_DebtAndPreferredEquityInvestmentsHeldForSaleMemberinvest_InvestmentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3us-gaap_FinancingReceivableAllowanceForCreditLossesLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Reserve for Possible Credit Losses2false 4us-gaap_ProvisionForLoanLeaseAndOtherLossesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse30000003000USD$falsetruefalse2truefalsefalse00USD$falsetruefalse3truefalsefalse00USD$falsetruefalse4truefalsefalse00USD$falsetruefalse5truefalsefalse30000003000USD$falsetruefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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 Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 168, 169, 170 -IssueDate 2006-05-01 -Chapter 5 -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. false2Loan loss reserves3false 4us-gaap_FinancingReceivableAllowanceForCreditLossesRecoveryus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse24360002436USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6truefalsefalse00USD$falsetruefalse7truefalsefalse24000002400USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmount of recovery of financing receivables doubtful of collection that were previously charged off.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 false2Recoveries recordedfalseSignificant Accounting Policies (Details 4) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.slgreenoperatingpartnership.com/role/DisclosureSignificantAccountingPoliciesDetails473