Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Debt) (Details)

v3.20.2
Fair Value Measurements (Debt) (Details) - Tanger Properties Limited Partnership [Member] - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total fair value of debt $ 1,565,149 $ 1,603,814
Recorded value of debt 1,568,217 1,569,773
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total fair value of debt 0 0
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total fair value of debt 1,133,864 1,169,481
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total fair value of debt $ 431,285 $ 434,333