Fair Value Measurements (Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Recorded value of debt	$ 1,865,674	$ 1,596,821
Tanger Properties Limited Partnership
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of debt	1,835,353	1,557,810
Recorded value of debt	1,865,674	1,596,821
Tanger Properties Limited Partnership | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of debt	0	0
Tanger Properties Limited Partnership | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of debt	1,251,341	1,004,896
Tanger Properties Limited Partnership | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of debt	$ 584,012	$ 552,914