Annual report pursuant to Section 13 and 15(d)

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

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Investments in Unconsolidated Real Estate Joint Ventures (Narrative) (Details) (USD $)
12 Months Ended 3 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Charlotte [Member]
store
sqft
Mar. 31, 2013
Deer Park Warehouse [Member]
Dec. 31, 2012
Deer Park Warehouse [Member]
sqft
Jul. 31, 2013
Galveston/Houston [Member]
Dec. 31, 2013
Galveston/Houston [Member]
sqft
Dec. 31, 2012
Galveston/Houston [Member]
sqft
May 31, 2013
National Harbor [Member]
Dec. 31, 2013
National Harbor [Member]
sqft
Jun. 30, 2013
National Harbor [Member]
Dec. 31, 2012
National Harbor [Member]
sqft
Nov. 30, 2012
RioCan Canda [Member]
Mar. 31, 2012
RioCan Canda [Member]
Mar. 31, 2012
RioCan Canda [Member]
Dec. 31, 2013
RioCan Canda [Member]
sqft
Dec. 31, 2012
RioCan Canda [Member]
sqft
Nov. 02, 2012
RioCan Canda [Member]
outletcenters
Jun. 30, 2012
Westgate [Member]
Dec. 31, 2013
Westgate [Member]
sqft
Jun. 30, 2013
Westgate [Member]
Dec. 31, 2012
Westgate [Member]
sqft
Nov. 02, 2012
Westgate [Member]
sqft
Dec. 31, 2013
Wisconsin Dells [Member]
sqft
Dec. 31, 2012
Wisconsin Dells [Member]
sqft
Nov. 02, 2012
Les Factoreries St. Sauveur Property [Member]
sqft
Nov. 02, 2012
Bromont Outlet Mall Property [Member]
sqft
Mar. 31, 2013
Cookstown [Member]
Dec. 31, 2013
Cookstown [Member]
sqft
Jun. 30, 2013
Ottawa [Member]
Dec. 31, 2013
Ottawa [Member]
store
sqft
Dec. 31, 2011
Cookstown Property [Member]
RioCan Canda [Member]
Dec. 31, 2012
Mortgage Loans on Real Estate [Member]
Wisconsin Dells [Member]
Schedule of Equity Method Investments [Line Items]                                                                  
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity $ 2,000,000 $ 2,000,000                                                              
Equity method investments 140,200,000 126,600,000 11,600,000   0   7,400,000 36,700,000   16,700,000   2,600,000       85,700,000 62,200,000     16,100,000   19,100,000   2,500,000 2,800,000                
Ownership %     50.00%   33.30%   50.00% 50.00%   50.00%   50.00%       50.00% 50.00%     58.00%   58.00%   50.00% 50.00%                
Number of stores     90                                                       80    
Estimated square footage of real estate property when completed     400,000                                                       303,000    
Company portion of contributed capital to the joint venture     11,500,000             17,200,000       15,100,000                                      
Abandoned development costs                             1,400,000                                    
Proceeds from sale of foreclosed assets       1,200,000                                                          
Joint venture debt, maximum borrowings           70,000,000                                                      
Basis spread on variable rate           1.50%     1.65%                   1.75%                           2.25%
Proceeds from joint venture debt           65,000,000                                                      
Joint venture debt                     62,000,000                 43,100,000                          
Joint venture debt outstanding 202,700,000 325,200,000 0   1,900,000   65,000,000 0   52,400,000   0       17,900,000 20,100,000     43,100,000   32,000,000     24,300,000               24,300,000
Debt instrument, term                                                                 10 years
Number of outlet centers acquired                                   2                              
Business acquisition, amount of cash paid and debt assumed                                                               47,400,000  
Business acquisition, contingent consideration, potential cash payment                                                               13,800,000  
Consideration transferred                         94,800,000                                     61,200,000  
Business acquisition, liabilities assumed                                                               29,600,000  
Business combination, financial liabilities                                   18,700,000                              
Business acquisition, debt assumed, stated interest rate                                   5.70%                              
Estimated square feet of expansion                                                   131,000 251,000   153,000        
Area of real estate property     0   29,253   352,705 352,705   336,000   0       432,836 434,562     331,739   332,234 332,000 265,086 265,086 116,000 162,000            
Payments to acquire real estate                                                       13,900,000   28,700,000      
Line of credit facility, maximum borrowing capacity                                         $ 48,300,000