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Earnings Per Unit of the Operating Partnership (Details) (Tanger Properties Limited Partnership [Member], USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2014 | Aug. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Tanger Properties Limited Partnership [Member] |  |  |  |  |
Numerator |  |  |  |  |
Net income attributable to partners of the Operating Partnership |  |  | $ 78,048skt_NetIncomeAvailalbeToPartners / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 113,200skt_NetIncomeAvailalbeToPartners / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 56,495skt_NetIncomeAvailalbeToPartners / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Less allocation of earnings to participating securities |  |  | (1,873)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (1,129)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (784)us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Net income available to common shareholders/unitholders of Tanger Factory Outlet Centers, Inc./the Operating Partnership |  |  | $ 76,175us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 112,071us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 55,711us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Denominator |  |  |  |  |
Basic weighted average common shares (in shares) |  |  | 98,883,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 98,193,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 97,677,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Effect of notional units (in shares) |  |  | 0skt_IncrementalCommonSharesAttributableToNotionalUnits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 849,000skt_IncrementalCommonSharesAttributableToNotionalUnits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 846,000skt_IncrementalCommonSharesAttributableToNotionalUnits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Effect of outstanding options and restricted common shares (in shares) |  |  | 70,000us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 87,000us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 82,000us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Diluted weighted average common shares (in shares) |  |  | 98,953,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 99,129,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 98,605,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Basic earnings per common unit: |  |  |  |  |
Net income, basic (in dollars per share) |  |  | $ 0.77us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1.14us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.57us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Diluted earnings per common unit: |  |  |  |  |
Net income, diluted (in dollars per share) |  |  | $ 0.77us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1.13us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.57us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Stock split, conversion ratio |  | 4us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  |  |
Number of notional units converted to restricted common units | 933,769skt_Numberofnotionalunitsconvertedtorestrictedcommonunits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  |  | 259,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 17,600us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember

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