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Debt of the Operating Partnership (Narrative) (Details)
$ in Thousands
1 Months Ended 9 Months Ended
Apr. 30, 2025
extension
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Debt Instrument [Line Items]        
Borrowings   $ 60,000   $ 0
Unsecured lines of credit | Debt | Unsecured lines of credit        
Debt Instrument [Line Items]        
Maximum amount of unconsolidated joint venture debt guaranteed by the Company   60,000   0
Unsecured term loan | Debt | Unsecured term loan        
Debt Instrument [Line Items]        
Maximum amount of unconsolidated joint venture debt guaranteed by the Company   325,000   325,000
Tanger Properties Limited Partnership        
Debt Instrument [Line Items]        
Borrowings   60,000   0
Unamortized debt issuance costs   4,800   10,100
Tanger Properties Limited Partnership | Interest Rate Swap        
Debt Instrument [Line Items]        
Notional Amount     $ 60,000  
Fixed rate (percent)     3.40%  
Tanger Properties Limited Partnership | Mortgages        
Debt Instrument [Line Items]        
Net book value of collateral for mortgages payable   $ 258,700    
Tanger Properties Limited Partnership | Mortgages | Southaven        
Debt Instrument [Line Items]        
Number of extensions | extension 0      
Basis spread on variable rate (percent) 2.00% 2.00%    
Tanger Properties Limited Partnership | Unsecured lines of credit        
Debt Instrument [Line Items]        
Maximum borrowings of syndicated line if accordion feature is utilized   $ 1,200,000    
Maximum borrowings of liquidity line   20,000    
Maximum borrowings of syndicated line   $ 600,000    
Percentage of funds from operations allowed on a cumulative basis to pay dividends   95.00%    
Unamortized debt issuance costs   $ 6,100   $ 7,400
Tanger Properties Limited Partnership | Unsecured lines of credit | Unsecured lines of credit        
Debt Instrument [Line Items]        
Basis spread on variable rate (percent)   0.85%    
Tanger Properties Limited Partnership | Unsecured lines of credit | Debt        
Debt Instrument [Line Items]        
Borrowings   $ 60,000    
Tanger Properties Limited Partnership | Unsecured lines of credit | Debt | Unsecured lines of credit        
Debt Instrument [Line Items]        
Line of credit borrowing capacity   $ 620,000    
Tanger Properties Limited Partnership | Unsecured term loan | Unsecured term loan        
Debt Instrument [Line Items]        
Basis spread on variable rate (percent)   0.94%