Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Debt (Details)

v3.10.0.1
Fair Value Measurements Debt (Details) - Tanger Properties Limited Partnership [Member] - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of debt $ 1,668,475 $ 1,775,540
Recorded value of debt 1,712,918 1,763,651
Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of debt 0 0
Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of debt 1,085,138 1,139,064
Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of debt $ 583,337 $ 636,476