Annual report pursuant to Section 13 and 15(d)

Acquisition of Rental Property - Narrative (Details)

v3.10.0.1
Acquisition of Rental Property - Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 31, 2016
Nov. 30, 2017
Aug. 31, 2016
Jun. 30, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
May 31, 2016
Foxwoods [Member]                
Acquistion of Rental Property [Line Items]                
Payments to Acquire Additional Interest in Subsidiaries   $ 0            
Economic interest percentage in joint venture   100.00%            
Savannah [Member]                
Acquistion of Rental Property [Line Items]                
Economic interest percentage in joint venture 98.00%              
Cash     $ 15,000,000          
Mortgage loan     96,900,000          
Ownership % 50.00%              
Contingent consideration     0          
Acquisition costs     260,000          
Gain on previously held interest in acquired joint ventures     46,300,000          
Rental property and related intangible increase     46,300,000          
Prepaids and other assets     250,000          
Accounts payable and accrued expense     $ 2,100,000          
Westgate [Member]                
Acquistion of Rental Property [Line Items]                
Cash       $ 39,000,000        
Mortgage loan       62,000,000        
Ownership %               58.00%
Contingent consideration       0        
Acquisition costs       127,000        
Gain on previously held interest in acquired joint ventures       49,300,000        
Rental property and related intangible increase       49,300,000        
Prepaids and other assets       227,000        
Accounts payable and accrued expense       5,000,000        
Payments to Acquire Businesses, Gross       $ 40,900,000        
Percentage of business acquired       40.00%        
Mortgages [Member] | Savannah [Member]                
Acquistion of Rental Property [Line Items]                
Basis spread on variable rate     1.65%          
Noncontrolling interests [Member] | Westgate [Member]                
Acquistion of Rental Property [Line Items]                
Payments to Acquire Additional Interest in Subsidiaries       $ 1,900,000        
Percentage of business acquired       2.00%        
London Interbank Offered Rate (LIBOR) [Member] | Westgate [Member] | Mortgages [Member]                
Acquistion of Rental Property [Line Items]                
Basis spread on variable rate       1.75%        
Tanger Properties Limited Partnership [Member]                
Acquistion of Rental Property [Line Items]                
Cash         $ 0 $ 0 $ 45,219,000  
Acquisition costs         0 0 487,000  
Gain on previously held interest in acquired joint ventures         0 0 $ 95,516,000  
Principal         $ 1,730,779,000 $ 1,780,562,000    
Tanger Properties Limited Partnership [Member] | 3.125% Senior Notes $250 million [Member] | Senior Notes [Member]                
Acquistion of Rental Property [Line Items]                
Principal     $ 250,000,000          
Rental growth rate [Member]                
Acquistion of Rental Property [Line Items]                
Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Input             3.00%  
Discount rate [Member] | Minimum [Member]                
Acquistion of Rental Property [Line Items]                
Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Input             7.50%  
Discount rate [Member] | Maximum [Member]                
Acquistion of Rental Property [Line Items]                
Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Input             8.25%  
Terminal capitalization rate [Member] | Minimum [Member]                
Acquistion of Rental Property [Line Items]                
Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Input             5.75%  
Terminal capitalization rate [Member] | Maximum [Member]                
Acquistion of Rental Property [Line Items]                
Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Input             7.00%