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, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Partnership Interest [Member]
     
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]      
Revenues $ 21,395 $ 11,658  
Property operating 8,803 4,891  
General and administrative 485 163  
Acquisition costs 421 704  
Abandoned development costs 0 954  
Depreciation and amortization 7,384 4,608  
Total expenses 17,093 11,320  
Operating income 4,302 338  
Interest expense 4,052 3,829  
Net income 250 (3,491)  
Tanger Factory Outlet Centers, Inc [Member]
     
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]      
Revenues 88,689 84,243  
Property operating 28,135 26,088  
General and administrative 9,572 10,020  
Acquisition costs 179 0  
Depreciation and amortization 22,288 25,515  
Total expenses 60,174 61,623  
Operating income 28,515 22,620  
Interest expense 12,876 12,334  
Net income 16,229 8,834 56,476
The Company and Operating Partnership's share of net income (loss) of unconsolidated joint ventures 590 (1,452)  
The Company and Operating Partnership's share of depreciation and impairment charges (real estate related) of unconsolidated joint ventures $ 3,173 $ 1,815