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 - Narrative (Details)

Debt of the Operating Partnership - Narrative (Details)	1 Months Ended									6 Months Ended	12 Months Ended			21 Months Ended
Debt of the Operating Partnership - Narrative (Details)	Oct. 31, 2015 USD ($)	Apr. 30, 2015 USD ($) Extension	Dec. 31, 2014 USD ($) Extension	Nov. 30, 2014 USD ($)	Jul. 31, 2014 USD ($)	Nov. 30, 2013 USD ($)	Oct. 31, 2013 USD ($)	Sep. 30, 2013	Aug. 31, 2013 USD ($)	Jun. 30, 2014	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2015 USD ($)	Jul. 31, 2015 USD ($)	May. 30, 2015 USD ($)	Dec. 31, 2011
Tanger Properties Limited Partnership [Member]
Debt Instrument [Line Items]
Principal balance of debt			$ 1,446,830,000								$ 1,567,186,000	$ 1,446,830,000
Proceeds from Issuance of Long-term Debt											627,839,000	931,608,000	$ 810,803,000
Loss on early extinguishment of debt											0	(13,140,000)	$ 0
Derivative, Fixed Interest Rate							1.30%
Tanger Properties Limited Partnership [Member] \| Mortgages [Member]
Debt Instrument [Line Items]
Collateral for mortgages payable											622,800,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Atlantic City Outlets The Walk [Member]
Debt Instrument [Line Items]
Effective interest rate																	5.05%
Principal balance of debt			45,997,000								43,312,000	45,997,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Ocean City Factory Outlets [Member]
Debt Instrument [Line Items]
Effective interest rate																	4.68%
Principal balance of debt			$ 17,827,000								0	$ 17,827,000			$ 17,600,000
Stated Interest Rate(s)			5.24%									5.24%
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| The Outlets at Hershey [Member]
Debt Instrument [Line Items]
Effective interest rate																	3.40%
Principal balance of debt			$ 29,271,000								0	$ 29,271,000				$ 29,000,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Southaven [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity		$ 60,000,000
Number of mortgage extensions \| Extension		1
Term of mortgage extension		2 years
Principal balance of debt			0								$ 45,824,000	0
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Southaven [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%									1.75%
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Foxwoods [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity			$ 70,300,000									70,300,000
Number of mortgage extensions \| Extension			2
Term of mortgage extension			1 year
Principal balance of debt			$ 25,235,000								$ 70,250,000	25,235,000
Discount			$ 0								$ 0	$ 0
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Foxwoods [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.65%								1.65%	1.65%
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Deer Park [Member]
Debt Instrument [Line Items]
Principal balance of debt			$ 150,000,000						$ 150,000,000.0		$ 150,000,000	$ 150,000,000
Discount			1,161,000						$ 1,600,000		$ 845,000	$ 1,161,000
Term of mortgage									5 years
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Deer Park [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate									1.50%		1.50%	1.50%
Tanger Properties Limited Partnership [Member] \| Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Effective interest rate																	3.15%
Principal balance of debt			$ 10,000,000								$ 10,000,000	$ 10,000,000
Stated Interest Rate(s)			1.50%								1.50%	1.50%
Discount			$ 241,000								$ 81,000	$ 241,000
Tanger Properties Limited Partnership [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity							$ 520,000,000				520,000,000
Liquidity Line, Maximum Borrowings											20,000,000
Syndicated Line, Maximum Borrowings											500,000,000
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized											$ 1,000,000,000
Syndicated Line, Amount That The Line May Be Increased	$ 1,000,000,000													$ 750,000,000
Percentage of funds from operations allowed on a cumulative basis required for debt covenants											95.00%
Principal balance of debt			111,000,000								$ 190,300,000	111,000,000
Debt Issuance Cost	$ 2,000,000						$ 1,500,000
Discount			0								$ 0	$ 0
Line of Credit Facility, Commitment Fee Percentage							0.15%	0.175%
Tanger Properties Limited Partnership [Member] \| Line of Credit [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%						1.00%	1.10%			0.90%	1.00%		1.00%
Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Principal balance of debt			250,000,000		$ 250,000,000						$ 250,000,000	$ 250,000,000
Discount			0								$ 0	$ 0
Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate					1.05%					1.60%	1.05%	1.05%
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 3.75% Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt			$ 250,000,000	$ 250,000,000							$ 250,000,000	$ 250,000,000
Debt Instrument, Pricing Percentage of Principal				99.429%
Debt Instrument, Percentage Yield to Maturity				3.819%
Stated Interest Rate(s)			3.75%	3.75%							3.75%	3.75%
Proceeds from Issuance of Long-term Debt				$ 246,200,000
Discount			$ 1,418,000								$ 1,298,000	$ 1,418,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 6.15% Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt				$ 250,000,000
Stated Interest Rate(s)				6.15%
Loss on early extinguishment of debt			13,100,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 3.875% Senior Notes [Member] [Member]
Debt Instrument [Line Items]
Principal balance of debt			$ 250,000,000			$ 250,000,000					$ 250,000,000	$ 250,000,000
Debt Instrument, Pricing Percentage of Principal						98.36%
Debt Instrument, Percentage Yield to Maturity						4.076%
Stated Interest Rate(s)			3.875%			3.875%					3.875%	3.875%
Proceeds from Issuance of Long-term Debt						$ 243,600,000
Discount			$ 3,732,000								$ 3,378,000	$ 3,732,000
Minimum [Member]
Debt Instrument [Line Items]
Percent of guaranty of completion and principal guaranty											5.00%
Maximum [Member]
Debt Instrument [Line Items]
Percent of guaranty of completion and principal guaranty											100.00%
Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Notional Amount			$ 150,000,000				$ 150,000,000				$ 150,000,000	$ 150,000,000