Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Deferred lease costs amount related to salaries and related costs                   $ 6,007 $ 6,098 $ 6,210  
Tanger Factory Outlet Centers, Inc. [Member]                          
Restricted Cash $ 0       $ 0         0 0 0 $ 121,300
Revenues 127,199 $ 124,236 $ 119,711 $ 123,535 $ 126,487 $ 120,765 $ 119,614 $ 121,368   494,681 488,234 465,834  
General and administrative                   44,167 $ 44,004 $ 46,696  
Minimum [Member] | Accounting Standards Update 2016-02 [Member]                          
Estimated operating lease liability 89,000                 89,000      
Estimated right-of-use asset 89,000                 89,000      
Maximum [Member] | Accounting Standards Update 2016-02 [Member]                          
Estimated operating lease liability 96,000                 96,000      
Estimated right-of-use asset $ 96,000                 $ 96,000      
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member]                          
Revenues                 $ 5,000        
Scenario, Forecast [Member] | Minimum [Member] | Accounting Standards Update 2016-02 [Member]                          
General and administrative                 4,000        
Scenario, Forecast [Member] | Maximum [Member] | Accounting Standards Update 2016-02 [Member]                          
General and administrative                 $ 5,000