Annual report pursuant to Section 13 and 15(d)

Partners' Equity of the Operating Partnership (Details)

v3.20.4
Partners' Equity of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - shares
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
General and Limited Partners' Capital Account, Units [Roll Forward]      
General partner (in units) 1,000,000    
Units withheld for employee income taxes (in units) (56,597) (131,873) (89,437)
Grant of restricted common shares awards by the Company, net of forfeitures (in units) 611,350 242,167 355,184
Repurchase of units (in units)   (1,209,328) (919,249)
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
Units withheld for employee income taxes (in units) 0 0 0
Exchange of Class A limited partnership units (in units) 0 0 0
Grant of restricted common shares awards by the Company, net of forfeitures (in units) 0 0 0
Repurchase of units (in units)   0 0
Issuance of deferred units (in units) 0    
General partner (in units) 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 4,995,433
Units withheld for employee income taxes (in units) 0 0 0
Exchange of Class A limited partnership units (in units) (116,530) (49,511) (34,749)
Grant of restricted common shares awards by the Company, net of forfeitures (in units) 0 0 0
Repurchase of units (in units)   0 0
Issuance of deferred units (in units) 0    
Limited partners (in units) 4,794,643 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) 91,892,260 92,941,783 93,560,536
Units withheld for employee income taxes (in units) (56,597) (131,873) (89,437)
Exchange of Class A limited partnership units (in units) 116,530 49,511 34,749
Grant of restricted common shares awards by the Company, net of forfeitures (in units) 611,350 242,167 355,184
Repurchase of units (in units)   (1,209,328) (919,249)
Issuance of deferred units (in units) 6,258    
Limited partners (in units) 92,569,801 91,892,260 92,941,783
Limited partners [Member]      
General and Limited Partners' Capital Account, Units [Roll Forward]      
Limited partners (in units) 96,803,433 97,902,467 98,555,969
Units withheld for employee income taxes (in units) (56,597) (131,873) (89,437)
Exchange of Class A limited partnership units (in units) 0 0 0
Grant of restricted common shares awards by the Company, net of forfeitures (in units) 611,350 242,167 355,184
Repurchase of units (in units)   (1,209,328) (919,249)
Issuance of deferred units (in units) 6,258    
Limited partners (in units) 97,364,444 96,803,433 97,902,467