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Development of Consolidated Rental Properties (Details) (USD $) | 16 Months Ended | 1 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 Hotel sqft | Jul. 31, 2014 | Dec. 31, 2014 mi sqft | Mar. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 Extension
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Area of real estate property | 982,000us-gaap_AreaOfRealEstateProperty |  | 982,000us-gaap_AreaOfRealEstateProperty |  |  |  | 982,000us-gaap_AreaOfRealEstateProperty
Foxwoods [Member] |  |  |  |  |  |  |
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Area of real estate property | 313,000us-gaap_AreaOfRealEstateProperty / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember |  | 313,000us-gaap_AreaOfRealEstateProperty / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember |  |  |  | 313,000us-gaap_AreaOfRealEstateProperty / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember
Number of Hotels | 2skt_NumberofHotels / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember |  | 2skt_NumberofHotels / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember |  |  |  | 2skt_NumberofHotels / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember
Partner's Portion of Contributed Capital to the Joint Venture | $ 1,000,000skt_PartnersPortionofContributedCapitaltotheJointVenture / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember |  |  |  |  |  |
Contributions for construction in process | 45,800,000us-gaap_PaymentsForConstructionInProcess / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_FoxwoodsMember |  |  |  |  |  |
Grand Rapids [Member] |  |  |  |  |  |  |
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Area of real estate property | 350,000us-gaap_AreaOfRealEstateProperty / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  | 350,000us-gaap_AreaOfRealEstateProperty / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  |  |  | 350,000us-gaap_AreaOfRealEstateProperty / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember
Contributions for construction in process |  |  | 19,700,000us-gaap_PaymentsForConstructionInProcess / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  |  |  |
Payments to Acquire Land |  | 8,000,000us-gaap_PaymentsToAcquireLand / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  |  |  |  |
Number of miles from major city | 11skt_Numberofmilesfrommajorcity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  | 11skt_Numberofmilesfrommajorcity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  |  |  | 11skt_Numberofmilesfrommajorcity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember
Number of miles from vacation destination | 30skt_Numberofmilesfromvacationdestination / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  | 30skt_Numberofmilesfromvacationdestination / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember |  |  |  | 30skt_Numberofmilesfromvacationdestination / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_GrandRapidsMember
West Branch [Member] |  |  |  |  |  |  |
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Net book value of damaged assets written off |  |  |  | 455,000skt_Netbookvalueofdamagedassetswrittenoff / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_WestBranchMember |  |  |
Demolition costs |  |  |  | 567,000skt_Demolitioncosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_WestBranchMember |  |  |
Total insurance proceeds received or expected to be received |  |  | 1,300,000skt_Totalexpectedproceedsfrominsurance / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_WestBranchMember |  |  |  |
Casualty gain |  |  | 486,000us-gaap_InsuredEventGainLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_WestBranchMember |  |  |  |
Tanger Properties Limited Partnership [Member] |  |  |  |  |  |  |
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Principal | 1,446,830,000us-gaap_DebtInstrumentCarryingAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 1,446,830,000us-gaap_DebtInstrumentCarryingAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 1,330,398,000us-gaap_DebtInstrumentCarryingAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 1,446,830,000us-gaap_DebtInstrumentCarryingAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Casualty gain |  |  | 486,000us-gaap_InsuredEventGainLoss / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 0us-gaap_InsuredEventGainLoss / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0us-gaap_InsuredEventGainLoss / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Tanger Properties Limited Partnership [Member] | Foxwoods [Member] |  |  |  |  |  |  |
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Ownership % | 67.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 67.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  |  |  | 67.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Foxwoods [Member] |  |  |  |  |  |  |
Development of Consolidated Rental Properties [Line Items] |  |  |  |  |  |  |
Maximum Borrowing Capacity | 70,300,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  | 70,300,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  |  |  | 70,300,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Basis spread on variable rate |  |  |  |  |  |  | 1.65%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Number of mortgage extensions |  |  |  |  |  |  | 2skt_Numberofmortgageextensions / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Term of mortgage extension |  |  |  |  |  |  | 1 year
Principal | $ 25,200,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  | $ 25,200,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  | $ 0us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  | $ 25,200,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = skt_FoxwoodsMember / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition The cash outflow from construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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