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Investments in Unconsolidated Real Estate Joint Ventures - Summary Statements of Operations for Unconsolidated Joint Ventures (Details) (USD $) | 12 Months Ended | 1 Months Ended | 3 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Aug. 31, 2013 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013
Partnership Interest [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 78,625,000us-gaap_Revenues / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | $ 85,682,000us-gaap_Revenues / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember | [1] | $ 54,936,000us-gaap_Revenues / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property operating | 30,986,000us-gaap_OperatingCostsAndExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 31,610,000us-gaap_OperatingCostsAndExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 24,678,000us-gaap_OperatingCostsAndExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative | 621,000us-gaap_GeneralAndAdministrativeExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 977,000us-gaap_GeneralAndAdministrativeExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 970,000us-gaap_GeneralAndAdministrativeExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition costs | 0us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 477,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 1,437,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Abandoned development costs | 472,000skt_AbandonedDevelopmentCosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 153,000skt_AbandonedDevelopmentCosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 1,447,000skt_AbandonedDevelopmentCosts / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment charge | 0us-gaap_ImpairmentOfRealEstate / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 0us-gaap_ImpairmentOfRealEstate / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 420,000us-gaap_ImpairmentOfRealEstate / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization | 23,426,000us-gaap_DepreciationAndAmortization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 26,912,000us-gaap_DepreciationAndAmortization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 19,914,000us-gaap_DepreciationAndAmortization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total expenses | 55,505,000us-gaap_OperatingExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 60,129,000us-gaap_OperatingExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 48,866,000us-gaap_OperatingExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income | 23,120,000us-gaap_OperatingIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 25,553,000us-gaap_OperatingIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 6,070,000us-gaap_OperatingIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on early extinguishment of debt (2) | 0us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 13,820,000us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember | [2] | 0us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense | (5,459,000)us-gaap_InterestExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | (11,602,000)us-gaap_InterestExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | (14,760,000)us-gaap_InterestExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 17,661,000us-gaap_ProfitLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | 27,771,000us-gaap_ProfitLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  | (8,690,000)us-gaap_ProfitLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_PartnershipInterestMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deer Park [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on early extinguishment of debt (2) |  |  |  |  |  |  | 13,800,000us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_DeerParkMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income, settlement of lawsuit |  |  | 9,500,000us-gaap_LitigationSettlementAmount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_DeerParkMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership % |  |  |  |  |  |  | 66.70%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = skt_DeerParkMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tanger Factory Outlet Centers, Inc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 418,558,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 384,819,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 357,002,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  | 108,374,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3],[4] | 105,189,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 102,212,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 102,783,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 107,325,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 97,804,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3],[5] | 91,002,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 88,688,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3]
Property operating | 137,422,000us-gaap_OperatingCostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 121,046,000us-gaap_OperatingCostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 111,160,000us-gaap_OperatingCostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative | 44,469,000us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 39,119,000us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 37,452,000us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition costs | 7,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 1,203,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 117,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Abandoned development costs | 2,365,000skt_AbandonedDevelopmentCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 0skt_AbandonedDevelopmentCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 0skt_AbandonedDevelopmentCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization | 102,432,000us-gaap_DepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 95,746,000us-gaap_DepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 98,683,000us-gaap_DepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total expenses | 286,695,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 257,114,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 247,412,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income | 131,863,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 127,705,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 109,590,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  | 35,587,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3],[4] | 35,283,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 32,625,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 28,368,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 35,916,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 33,431,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3],[5] | 29,843,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 28,515,000us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3]
Gain on early extinguishment of debt (2) | (13,140,000)us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 0us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 0us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  | 13,100,000us-gaap_GainsLossesOnExtinguishmentOfDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense | (57,931,000)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | (51,616,000)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | (49,814,000)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 78,152,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 113,321,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 56,476,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  | 18,520,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3],[4] | 24,297,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 19,895,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 15,440,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 23,136,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 56,180,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3],[5] | 17,776,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3] | 16,229,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [3]
Net income (loss) | 9,053,000us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 11,040,000us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | (3,295,000)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and asset impairments (real estate related) (2) | $ 12,212,000skt_EquityMethodInvesmentCompanyAndOperatingPartnershipShareOfRealEstateRelatedDepreciation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [2] | $ 12,419,000skt_EquityMethodInvesmentCompanyAndOperatingPartnershipShareOfRealEstateRelatedDepreciation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [2] | $ 8,245,000skt_EquityMethodInvesmentCompanyAndOperatingPartnershipShareOfRealEstateRelatedDepreciation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Note that revenues for the year ended December 31, 2013 include approximately $9.5 million of other income from the settlement of a lawsuit at Deer Park prior to our acquisition of an additional one-third interest in and the consolidation of the property.
[2] | Represents a gain on early extinguishment of debt that was recorded as part of the refinancing of the debt at Deer Park in August 2013 (See Note 3).
[3] | Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis.
[4] | For the fourth quarter, net income includes a $7.5 million gain on the sale of our Lincoln City outlet center and a $13.1 million loss on early extinguishment of debt related to the early redemption of senior notes due November 2015.
[5] | For the third quarter, net income includes a $26.0 million gain on our previously held interest in Deer Park upon the acquisition of an additional one-third interest in August 2013, and the consolidation of Deer Park into our financial statements.

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- Definition Charge for the write-off of previously capitalized pre-development costs related to a development project that is no longer probable. + References No definition available. + Details
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- Definition Equity Method Invesment Company and Operating Partnership Share of Real Estate Related Depreciation - The Company's share of the total unconcolidated joint ventures real estate related decpreciation. + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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