Investments in Unconsolidated Real Estate Joint Ventures (Summary Balance Sheets for Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands		1 Months Ended
	May 31, 2025	Jun. 30, 2025	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Assets
Land			$ 342,203	$ 311,355
Buildings, improvements and fixtures			3,318,981	3,089,239
Construction in progress			18,310	7,453
Rental property, at cost, total			3,679,494	3,408,047
Accumulated depreciation			(1,483,480)	(1,428,017)
Total rental property, net			2,196,014	1,980,030
Cash and cash equivalents			50,228	46,992	$ 11,053		$ 12,778
Deferred lease costs and other intangibles, net			115,999	85,028
Prepaids and other assets			126,260	127,369
Total assets			2,635,937	2,381,183
Liabilities and Owners’ Equity
Mortgages payable, net			186,050	58,867
Owners’ equity		$ 661,342	732,151	679,674	592,632	$ 577,580	591,313
Total liabilities and equity			2,635,937	2,381,183
Total liabilities			1,903,786	1,701,509
Tanger Properties Limited Partnership
Summary Balance Sheets of Unconsolidated Joint Ventures [Line Items]
Principal			1,617,790	1,433,906
Assets
Land			342,203	311,355
Buildings, improvements and fixtures			3,318,981	3,089,239
Construction in progress			18,310	7,453
Rental property, at cost, total			3,679,494	3,408,047
Accumulated depreciation			(1,483,480)	(1,428,017)
Total rental property, net			2,196,014	1,980,030
Cash and cash equivalents			49,960	46,700	$ 10,830		$ 12,572
Deferred lease costs and other intangibles, net			115,999	85,028
Prepaids and other assets			125,805	126,852
Total assets			2,635,214	2,380,374
Liabilities and Owners’ Equity
Mortgages payable, net			186,050	58,867
Total liabilities and equity			2,635,214	2,380,374
Total liabilities			1,903,063	1,700,700
Interest Rate Swap | Tanger Properties Limited Partnership
Summary Balance Sheets of Unconsolidated Joint Ventures [Line Items]
Notional Amount		$ 60,000
Fixed rate (percent)		3.40%
Mortgages | Galveston/Houston | Tanger Properties Limited Partnership
Summary Balance Sheets of Unconsolidated Joint Ventures [Line Items]
Principal	$ 58,000		60,000
Basis spread on variable rate (percent)	3.00%	1.65%
Unconsolidated Properties
Assets
Land			79,108	79,920
Buildings, improvements and fixtures			468,874	459,148
Construction in progress			630	1,051
Rental property, at cost, total			548,612	540,119
Accumulated depreciation			(229,183)	(214,826)
Total rental property, net			319,429	325,293
Cash and cash equivalents			15,385	17,480
Deferred lease costs and other intangibles, net			2,534	1,841
Prepaids and other assets			13,698	10,137
Total assets			351,046	354,751
Liabilities and Owners’ Equity
Mortgages payable, net			316,529	317,191
Accounts payable and other liabilities			14,140	14,670
Owners’ equity			20,377	22,890
Total liabilities and equity			351,046	354,751
Total liabilities			$ 330,669	$ 331,861