CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Tanger Factory Outlet Centers, Inc. [Member]
Rental property:
Land	$ 279,978	$ 279,978
Buildings, improvements and fixtures	2,825,729	2,793,638
Construction in progress	1,329	14,854
Rental property, at cost, total	3,107,036	3,088,470
Accumulated depreciation	(956,418)	(901,967)
Total rental property, net	2,150,618	2,186,503
Cash and cash equivalents	4,261	6,101
Investments in unconsolidated joint ventures	110,502	119,436
Deferred lease costs and other intangibles, net	124,234	132,061
Prepaids and other assets	98,982	96,004
Total assets	2,488,597	2,540,105
Debt:
Senior, unsecured notes, net	1,135,705	1,134,755
Unsecured term loan, net	323,249	322,975
Mortgages payable, net	89,235	99,761
Unsecured lines of credit, net	220,018	206,160
Total debt	1,768,207	1,763,651
Accounts payable and accrued expenses	65,445	90,416
Other liabilities	79,281	73,736
Total liabilities	1,912,933	1,927,803
Commitments and contingencies
Tanger Factory Outlet Centers, Inc.:
Common shares, $.01 par value, 300,000,000 shares authorized, 93,907,034 and 94,560,536 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	939	946
Paid in capital	770,877	784,782
Accumulated distributions in excess of net income	(204,506)	(184,865)
Partners' Equity:
Accumulated other comprehensive loss	(20,722)	(19,285)
Equity attributable to Tanger Factory Outlet Centers, Inc.	546,588	581,578
Noncontrolling interests in Operating Partnership	29,076	30,724
Noncontrolling interests in other consolidated partnerships	0	0
Total equity	575,664	612,302
Total liabilities and equity	2,488,597	2,540,105
Tanger Properties Limited Partnership [Member]
Rental property:
Land	279,978	279,978
Buildings, improvements and fixtures	2,825,729	2,793,638
Construction in progress	1,329	14,854
Rental property, at cost, total	3,107,036	3,088,470
Accumulated depreciation	(956,418)	(901,967)
Total rental property, net	2,150,618	2,186,503
Cash and cash equivalents	4,135	6,050
Investments in unconsolidated joint ventures	110,502	119,436
Deferred lease costs and other intangibles, net	124,234	132,061
Prepaids and other assets	98,428	95,384
Total assets	2,487,917	2,539,434
Debt:
Senior, unsecured notes, net	1,135,705	1,134,755
Unsecured term loan, net	323,249	322,975
Mortgages payable, net	89,235	99,761
Unsecured lines of credit, net	220,018	206,160
Total debt	1,768,207	1,763,651
Accounts payable and accrued expenses	64,765	89,745
Other liabilities	79,281	73,736
Total liabilities	1,912,253	1,927,132
Commitments and contingencies
Partners' Equity:
General partner, 1,000,000 units outstanding at June 30, 2018 and December 31, 2017	5,637	5,844
Limited partners, 4,995,433 and 4,995,433 Class A common units, and 92,907,034 and 93,560,536 Class B common units outstanding at June 30, 2018 and December 31, 2017, respectively	591,886	626,803
Accumulated other comprehensive loss	(21,859)	(20,345)
Total partners' equity	575,664	612,302
Noncontrolling interests in other consolidated partnerships	0	0
Total equity	575,664	612,302
Total liabilities and equity	$ 2,487,917	$ 2,539,434