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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Debt of the Operating Partnership (Schedule of Debt) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2011
Debt Instrument [Line Items]
Book Value	$ 1,563,090	$ 1,423,759
Tanger Properties Limited Partnership
Debt Instrument [Line Items]
Principal	1,572,540	1,433,906
Book Value	1,563,090	1,423,759
Unamortized debt issuance costs	$ 9,500	10,100
Tanger Properties Limited Partnership \| Senior notes \| 3.125% 2026 Senior Notes
Debt Instrument [Line Items]
Fixed interest rate (percent)	3.125%
Principal	$ 350,000	350,000
Book Value	$ 349,191	349,045
Tanger Properties Limited Partnership \| Senior notes \| 3.875% 2027 Senior Notes
Debt Instrument [Line Items]
Fixed interest rate (percent)	3.875%
Principal	$ 300,000	300,000
Book Value	$ 299,058	298,956
Tanger Properties Limited Partnership \| Senior notes \| 2.750% 2031 Senior Notes
Debt Instrument [Line Items]
Fixed interest rate (percent)	2.75%
Principal	$ 400,000	400,000
Book Value	393,933	393,710
Tanger Properties Limited Partnership \| Mortgages payable \| Atlantic City
Debt Instrument [Line Items]
Principal	6,840	7,206
Book Value	$ 6,956	7,341
Effective interest rate			5.05%
Tanger Properties Limited Partnership \| Mortgages payable \| Southaven
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.00%
Principal	$ 51,700	51,700
Book Value	$ 51,550	51,525
Portion of mortgage under guarantee (percent)	10.00%
Tanger Properties Limited Partnership \| Unsecured term loan \| Unsecured term loan
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.94%
Principal	$ 325,000	325,000
Book Value	323,402	323,182
Tanger Properties Limited Partnership \| Unsecured lines of credit
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 7,000	7,400
Tanger Properties Limited Partnership \| Unsecured lines of credit \| Unsecured lines of credit
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.85%
Principal	$ 139,000	0
Book Value	$ 139,000	$ 0
Tanger Properties Limited Partnership \| Minimum \| Mortgages payable \| Atlantic City
Debt Instrument [Line Items]
Fixed interest rate (percent)	6.44%