Tanger Inc. Annual report pursuant to Section 13 and 15(d)

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

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 505,535
Ending Balance	456,109	$ 505,535
Interest rate swap gain (loss) to be reclassified within twelve months	(344)
Foreign currency [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(34,380)	(25,689)	$ (33,827)
Other comprehensive income before reclassifications	4,279	(8,691)	8,138
Reclassification out of accumulated other comprehensive income into interest expense	3,638
Ending Balance	(26,463)	(34,380)	(25,689)
Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income before reclassifications	(3,957)
Reclassification out of accumulated other comprehensive income into interest expense	(2,217)
Ending Balance	(425)
Cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	5,749	5,344	3,993
Other comprehensive income before reclassifications		2,461	1,075
Reclassification out of accumulated other comprehensive income into interest expense		(2,056)	276
Ending Balance		5,749	5,344
Accumulated other comprehensive income (loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(28,631)	(20,345)	(29,834)
Other comprehensive income before reclassifications	322	(6,230)	9,213
Reclassification out of accumulated other comprehensive income into interest expense	1,421	(2,056)	276
Ending Balance	$ (26,888)	$ (28,631)	$ (20,345)