Quarterly report pursuant to Section 13 or 15(d)

Partners' Equity of the Operating Partnership (Details)

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Partners' Equity of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
General and Limited Partners' Capital Account, Units [Roll Forward]        
General partner (in units)     1,000,000  
Grant of restricted common shares awards, net of forfeitures (in units)     611,350 242,167
Forfeitures of restricted common share awards (in units) (18,996)      
Issuance of deferred shares (in shares/units)     6,258  
Units withheld for employee income taxes (in units)     (56,597) (81,284)
General partner (in units) 1,000,000   1,000,000  
General partner [Member]        
General and Limited Partners' Capital Account, Units [Roll Forward]        
General partner (in units) 1,000,000 1,000,000 1,000,000 1,000,000
Grant of restricted common shares awards, net of forfeitures (in units)     0 0
Forfeitures of restricted common share awards (in units) 0      
Repurchase of units (in units)   0   0
Issuance of deferred shares (in shares/units)     0  
Units withheld for employee income taxes (in units)     0 0
General partner (in units) 1,000,000 1,000,000 1,000,000 1,000,000
Class A Limited Partnership Units [Member]        
General and Limited Partners' Capital Account, Units [Roll Forward]        
Limited partners (in units) 4,911,173 4,960,684 4,911,173 4,960,684
Grant of restricted common shares awards, net of forfeitures (in units)     0 0
Forfeitures of restricted common share awards (in units) 0      
Repurchase of units (in units)   0   0
Issuance of deferred shares (in shares/units)     0  
Units withheld for employee income taxes (in units)     0 0
Limited partners (in units) 4,911,173 4,960,684 4,911,173 4,960,684
Class B Limited Partnership Units [Member]        
General and Limited Partners' Capital Account, Units [Roll Forward]        
Limited partners (in units) 92,472,267 92,544,267 91,892,260 92,941,783
Grant of restricted common shares awards, net of forfeitures (in units)     611,350 242,167
Forfeitures of restricted common share awards (in units) (18,996)      
Repurchase of units (in units)   (650,929)   (1,209,328)
Issuance of deferred shares (in shares/units)     6,258  
Units withheld for employee income taxes (in units)     (56,597) (81,284)
Limited partners (in units) 92,453,271 91,893,338 92,453,271 91,893,338
Limited partners [Member]        
General and Limited Partners' Capital Account, Units [Roll Forward]        
Limited partners (in units) 97,383,440 97,504,951 96,803,433 97,902,467
Grant of restricted common shares awards, net of forfeitures (in units)     611,350 242,167
Forfeitures of restricted common share awards (in units) (18,996)      
Repurchase of units (in units)   (650,929)   (1,209,328)
Issuance of deferred shares (in shares/units)     6,258  
Units withheld for employee income taxes (in units)     (56,597) (81,284)
Limited partners (in units) 97,364,444 96,854,022 97,364,444 96,854,022