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

Annual report pursuant to Section 13 and 15(d)

Debt of the Operating Partnership (Details)

Debt of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - USD ($)	1 Months Ended				3 Months Ended	12 Months Ended			21 Months Ended
	Dec. 31, 2017	Apr. 30, 2016	Oct. 31, 2015	Apr. 30, 2015	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Nov. 30, 2017	Aug. 31, 2017	Jul. 31, 2017	Oct. 31, 2016	Dec. 31, 2011
Debt Instrument [Line Items]
Principal	$ 1,780,562,000					$ 1,780,562,000	$ 1,705,998,000
Book value of debt	1,763,651,000					1,763,651,000	1,687,866,000
Debt Issuance Costs, Net	$ 12,700,000					12,700,000	14,000,000
Amortization of Debt Issuance Costs						$ 3,263,000	3,237,000	$ 2,730,000
Senior Notes [Member] \| 6.125% 2020 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	6.125%					6.125%					6.125%
Principal	$ 0					$ 0	300,000,000				$ 300,000,000
Book value of debt	$ 0					$ 0	298,226,000
Senior Notes [Member] \| 3.875% 2023 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	3.875%					3.875%
Principal	$ 250,000,000					$ 250,000,000	250,000,000
Book value of debt	$ 246,036,000					$ 246,036,000	245,425,000
Senior Notes [Member] \| 3.75% 2024 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	3.75%					3.75%
Principal	$ 250,000,000					$ 250,000,000	250,000,000
Book value of debt	$ 247,410,000					$ 247,410,000	247,058,000
Senior Notes [Member] \| 3.125% 2026 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	3.125%					3.125%							3.125%
Principal	$ 350,000,000					$ 350,000,000	350,000,000
Book value of debt	$ 345,128,000					$ 345,128,000	344,600,000
Senior Notes [Member] \| 3.875% 2027 Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	3.875%					3.875%						3.875%
Principal	$ 300,000,000					$ 300,000,000	0					$ 300,000,000
Book value of debt	296,182,000					296,182,000	0
Mortgages [Member] \| Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Principal	37,462,000					37,462,000	40,471,000
Book value of debt	39,879,000					39,879,000	43,286,000
Effective interest rate														5.05%
Mortgages [Member] \| Foxwoods [Member]
Debt Instrument [Line Items]
Principal	0					0	70,250,000			$ 70,300,000
Book value of debt	0					0	69,902,000
Mortgages [Member] \| Southaven [Member]
Debt Instrument [Line Items]
Principal	60,000,000					60,000,000	59,277,000
Book value of debt	59,881,000					59,881,000	58,957,000
Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Principal	325,000,000	$ 325,000,000			$ 250,000,000	325,000,000	325,000,000
Book value of debt	322,975,000					322,975,000	322,410,000
Line of Credit [Member]
Debt Instrument [Line Items]
Principal	208,100,000					208,100,000	61,000,000
Book value of debt	$ 206,160,000					$ 206,160,000	$ 58,002,000
London Interbank Offered Rate (LIBOR) [Member] \| Mortgages [Member] \| Foxwoods [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						1.55%
London Interbank Offered Rate (LIBOR) [Member] \| Mortgages [Member] \| Southaven [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				1.75%		1.75%
London Interbank Offered Rate (LIBOR) [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.95%			1.05%	0.95%
London Interbank Offered Rate (LIBOR) [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%		0.90%			0.90%			1.00%
Minimum [Member] \| Mortgages [Member] \| Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	5.14%					5.14%
Maximum [Member] \| Mortgages [Member] \| Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Stated Interest Rate(s)	7.65%					7.65%