Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Principles of Consolidation (Details)

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Summary of Significant Accounting Policies - Principles of Consolidation (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Equity method investments $ 201,100 $ 208,000    
Tanger Properties Limited Partnership [Member]        
Assets 2,326,036 2,096,085    
Liabilities 1,720,004 1,572,199    
Real Estate Investment Property, Net 1,764,876 1,601,367    
Cash and cash equivalents 21,552 15,806 $ 14,984 $ 10,295
Other Assets 78,248 71,848    
Accounts Payable and Accrued Liabilities 96,725 67,983    
Long-term Debt 1,563,806 1,443,194    
Savannah [Member]        
Equity method investments [1] 44,400 $ 46,500    
Southaven [Member]        
Assets 81,500      
Liabilities 55,600      
Real Estate Investment Property, Net 76,700      
Cash and cash equivalents 1,400      
Other Assets 3,400      
Accounts Payable and Accrued Liabilities 9,800      
Long-term Debt $ 45,800      
[1] Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than indicated in the Tanger Ownership column, which states our legal interest in this venture. As of December 31, 2015, based upon the liquidation proceeds we would receive from a hypothetical liquidation of our investment based on depreciated book value, our estimated economic interest in the venture was approximately 98%. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.