Quarterly report pursuant to Section 13 or 15(d)

Investments in Unconsolidated Real Estate Joint Ventures (Summary Statements of Operations for Unconsolidated Joint Ventures) (Details)

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Investments in Unconsolidated Real Estate Joint Ventures (Summary Statements of Operations for Unconsolidated Joint Ventures) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Unconsolidated Properties [Member]        
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]        
Revenues $ 23,406 $ 23,285 $ 47,403 $ 47,347
Expenses:        
Property operating 8,958 8,877 18,886 18,255
General and administrative 54 96 253 216
Depreciation and amortization 6,545 6,943 12,907 14,456
Total expenses 15,557 15,916 32,046 32,927
Operating income 7,849 7,369 15,357 14,420
Interest expense (3,388) (2,460) (6,465) (4,720)
Other non-operating income (expense) 55 1 107 3
Net income 4,516 4,910 8,999 9,703
Tanger Factory Outlet Centers, Inc. [Member]        
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]        
Revenues 119,711 119,614 243,246 240,982
Expenses:        
Property operating 37,946 37,116 80,164 77,503
General and administrative 10,997 11,500 22,109 22,912
Depreciation and amortization 32,694 32,905 65,817 64,199
Total expenses 81,637 81,521 168,090 165,241
Operating income 38,074 38,093 75,156 75,741
Interest expense (16,181) (16,520) (31,981) (33,007)
Other non-operating income (expense) 191 57 400 92
Net income 24,290 30,947 47,975 54,461
The Company and Operating Partnership's share of:        
Net income 2,206 2,374 4,400 4,692
Depreciation and amortization expense (real estate related) $ 3,325 $ 3,550 $ 6,554 $ 7,388