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Shareholders' Equity of the Company (Details) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member] |  |  |
Entity Information [Line Items] |  |  |
Common shares issued in exchange for Operating Partnership units (in shares) | 66,606us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 67,428us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6,730,028us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Convertible units, shares issued upon conversion into common shares | 1skt_Convertibleunitssharesissueduponconversionintocommonshares / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Class A Limited Partnership Units [Member] | Tanger Properties Limited Partnership [Member] |  |  |
Entity Information [Line Items] |  |  |
Common shares issued in exchange for Operating Partnership units (in shares) | (66,606)us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = skt_ClassALimitedPartnershipUnitsMember | (67,428)us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = skt_ClassALimitedPartnershipUnitsMember | (6,730,028)us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = skt_ClassALimitedPartnershipUnitsMember
Number of operating partnership units owned by family limited partners | 5,078,406skt_NumberofOperatingPartnershipUnitsOwnedbytheOperatingPartnershipandOtherLimitedPartners / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = skt_ClassALimitedPartnershipUnitsMember | 5,145,012skt_NumberofOperatingPartnershipUnitsOwnedbytheOperatingPartnershipandOtherLimitedPartners / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = skt_ClassALimitedPartnershipUnitsMember |

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- Definition Number of Operating Partnership Units Owned by the Operating Partnership and Other Limited Partners + References No definition available. + Details
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- Definition The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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