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 Debt of the Operating Partnership - Narrative (Details)

Debt of the Operating Partnership Debt of the Operating Partnership - Narrative (Details) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014 Extension	Aug. 31, 2013	Oct. 31, 2013	Sep. 30, 2013	Nov. 30, 2014	Nov. 30, 2013	Jul. 31, 2014	Feb. 29, 2012	Dec. 31, 2011
Tanger Properties Limited Partnership [Member]
Debt Instrument [Line Items]
Principal balance of debt	$ 1,446,830,000	$ 1,330,398,000		$ 1,446,830,000
Loss on early extinguishment of debt	(13,140,000)	0	0
Proceeds from Issuance of Long-term Debt	931,608,000	810,803,000	585,800,000
Long-term Debt	1,443,194,000	1,328,049,000		1,443,194,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member]
Debt Instrument [Line Items]
Collateral for mortgages payable	602,700,000			602,700,000
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	48,535,000		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	18,193,000		17,827,000
Stated Interest Rate(s)	5.24%	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	29,970,000		29,271,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Foxwoods [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity	70,300,000			70,300,000
Basis spread on variable rate				1.65%
Number of mortgage extensions				2
Term of mortgage extension				1 year
Principal balance of debt	25,200,000	0		25,200,000
Tanger Properties Limited Partnership [Member] \| Mortgages [Member] \| Deer Park [Member]
Debt Instrument [Line Items]
Effective interest rate						2.80%
Basis spread on variable rate	1.50%	1.50%			1.50%
Principal balance of debt	150,000,000	150,000,000		150,000,000	150,000,000.0
Discount	1,161,000	1,478,000		1,161,000	1,600,000
Term of mortgage					5 years
Derivative, Fixed Interest Rate						1.30%
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	396,000		241,000
Tanger Properties Limited Partnership [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity						520,000,000
Liquidity Line, Maximum Borrowings	20,000,000			20,000,000
Syndicated Line, Maximum Borrowings	500,000,000			500,000,000
Syndicated Line, Amount That The Line May Be Increased	750,000,000			750,000,000
Percentage of funds from operations allowed on a cumulative basis required for debt covenants	95.00%
Basis spread on variable rate	1.00%	1.00%				1.00%	1.10%
Principal balance of debt	111,000,000	16,200,000		111,000,000
Discount	0	0		0
Line of Credit Facility, Commitment Fee Percentage						0.15%	0.175%
Debt Issuance Cost						1,500,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 3.75% Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt	250,000,000	0		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%
Proceeds from Issuance of Long-term Debt								246,200,000
Discount	1,418,000	0		1,418,000
Tanger Properties Limited Partnership [Member] \| Senior Notes [Member] \| 6.15% Senior Notes [Member]
Debt Instrument [Line Items]
Principal balance of debt	0	250,000,000		0				250,000,000
Stated Interest Rate(s)	6.15%	6.15%		6.15%				6.15%
Loss on early extinguishment of debt				13,100,000
Discount	0	211,000		0
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	4,072,000		3,732,000
Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.05%	1.60%								1.05%	1.60%
Principal balance of debt	250,000,000	250,000,000		250,000,000
Discount	0	0		0
Term of loan											7 years
Debt [Member] \| Tanger Properties Limited Partnership [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt											250,000,000.0
Minimum [Member]
Debt Instrument [Line Items]
Percent of guaranty of completion and principal guaranty	5.00%			5.00%
Maximum [Member]
Debt Instrument [Line Items]
Percent of guaranty of completion and principal guaranty	100.00%			100.00%