Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Loss of the Operating Partnership - Balances of Each Component (Details)

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Accumulated Other Comprehensive Loss of the Operating Partnership - Balances of Each Component (Details) - Tanger Properties Limited Partnership [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance $ 456,109    
Ending Balance 358,883 $ 456,109  
Interest rate swap gain (loss) to be reclassified within twelve months (1,100)    
Foreign currency [Member]      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (26,463) (34,380) $ (25,689)
Other comprehensive income (loss) before reclassifications 1,783 4,279 (8,691)
Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges   3,638  
Ending Balance (24,680) (26,463) (34,380)
Cash flow hedges [Member]      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance   5,749 5,344
Other comprehensive income (loss) before reclassifications   (3,957) 2,461
Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges   (2,217) (2,056)
Ending Balance     5,749
Cash flow hedges [Member]      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (425)    
Other comprehensive income (loss) before reclassifications (7,108)    
Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges 4,174    
Ending Balance (3,359) (425)  
Accumulated other comprehensive income (loss) [Member]      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (26,888) (28,631) (20,345)
Other comprehensive income (loss) before reclassifications (5,325) 322 (6,230)
Reclassification out of accumulated other comprehensive income (loss) into other income (expense) for foreign currency and interest expense for cash flow hedges 4,174 1,421 (2,056)
Ending Balance $ (28,039) $ (26,888) $ (28,631)