Annual report pursuant to Section 13 and 15(d)

Investments in Unconsolidated Real Estate Joint Ventures - Unconsolidated Real Estate Joint Ventures (Details)

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Investments in Unconsolidated Real Estate Joint Ventures - Unconsolidated Real Estate Joint Ventures (Details)
ft² in Thousands, $ in Thousands
Dec. 31, 2019
USD ($)
ft²
Dec. 31, 2018
USD ($)
ft²
Jun. 30, 2016
ft²
Jul. 31, 2014
ft²
Nov. 30, 2013
ft²
Oct. 31, 2012
ft²
Schedule of Equity Method Investments [Line Items]            
Square Feet | ft² 878          
RioCan Canada [Member]            
Schedule of Equity Method Investments [Line Items]            
Ownership % 50.00% 50.00%        
Square Feet | ft² 764 924        
Investments included in investments in unconsolidated joint ventures $ 94,700 $ 96,000        
Columbus [Member]            
Schedule of Equity Method Investments [Line Items]            
Ownership % 50.00% 50.00%        
Square Feet | ft² 355 355 355      
Investments included in other liabilities $ (3,500) $ (1,600)        
Charlotte [Member]            
Schedule of Equity Method Investments [Line Items]            
Ownership % 50.00% 50.00%        
Square Feet | ft² 399 398   398    
Investments included in other liabilities $ (13,000) $ (10,800)        
National Harbor [Member]            
Schedule of Equity Method Investments [Line Items]            
Ownership % 50.00% 50.00%        
Square Feet | ft² 341 341     341  
Investments included in other liabilities $ (5,900) $ (5,100)        
Galveston/Houston [Member]            
Schedule of Equity Method Investments [Line Items]            
Ownership % 50.00% 50.00%        
Square Feet | ft² 353 353       353
Investments included in other liabilities $ (19,700) $ (15,000)        
Columbus Charlotte National Harbor and Galveston/Houston [Member]            
Schedule of Equity Method Investments [Line Items]            
Investments included in other liabilities (42,100) (32,500)        
Unconsolidated Properties [Member]            
Schedule of Equity Method Investments [Line Items]            
Total Joint Venture Debt, Net 368,032 367,865        
Unconsolidated Properties [Member] | RioCan Canada [Member]            
Schedule of Equity Method Investments [Line Items]            
Total Joint Venture Debt, Net 9,200 9,300        
Unconsolidated Properties [Member] | Columbus [Member]            
Schedule of Equity Method Investments [Line Items]            
Total Joint Venture Debt, Net 85,000 84,700        
Unconsolidated Properties [Member] | Charlotte [Member]            
Schedule of Equity Method Investments [Line Items]            
Total Joint Venture Debt, Net 99,500 99,500        
Unconsolidated Properties [Member] | National Harbor [Member]            
Schedule of Equity Method Investments [Line Items]            
Total Joint Venture Debt, Net 94,400 94,500        
Unconsolidated Properties [Member] | Galveston/Houston [Member]            
Schedule of Equity Method Investments [Line Items]            
Total Joint Venture Debt, Net 79,900 79,600        
Mortgages [Member] | Unconsolidated Properties [Member]            
Schedule of Equity Method Investments [Line Items]            
Debt origination costs and premiums $ 1,100 $ 1,400