Investments in Unconsolidated Real Estate Joint Ventures (Unconsolidated Real Estate Joint Ventures) (Details) ft² in Thousands, $ in Thousands	Jun. 30, 2022 USD ($) ft²	Dec. 31, 2021 USD ($) ft²
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	$ 60,146	$ 62,474
Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	329,535	329,460
Unconsolidated Properties | Mortgages
Schedule of Equity Method Investments [Line Items]
Net of debt origination costs	(1,000)	(1,000)
Investments In Unconsolidated Joint Ventures
Schedule of Equity Method Investments [Line Items]
Carrying Value of Investment	$ 80,000	$ 82,600
Investments In Unconsolidated Joint Ventures | RioCan Canada
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square feet | ft²	665	665
Carrying Value of Investment	$ 80,000	$ 82,400
Investments In Unconsolidated Joint Ventures | RioCan Canada | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	0	$ 0
Investments In Unconsolidated Joint Ventures | Columbus
Schedule of Equity Method Investments [Line Items]
Ownership %		50.00%
Square feet | ft²		355
Carrying Value of Investment		$ 200
Investments In Unconsolidated Joint Ventures | Columbus | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net		70,900
Other Liabilities
Schedule of Equity Method Investments [Line Items]
Carrying Value of Investment	$ 46,200	$ 41,400
Other Liabilities | Columbus
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%
Square feet | ft²	355
Carrying Value of Investment	$ 1,200
Other Liabilities | Columbus | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	$ 70,900
Other Liabilities | Charlotte
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square feet | ft²	399	399
Carrying Value of Investment	$ 17,700	$ 16,200
Other Liabilities | Charlotte | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	$ 99,600	$ 99,600
Other Liabilities | National Harbor
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square feet | ft²	341	341
Carrying Value of Investment	$ 12,300	$ 11,200
Other Liabilities | National Harbor | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	$ 94,600	$ 94,500
Other Liabilities | Galveston/Houston
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%	50.00%
Square feet | ft²	353	353
Carrying Value of Investment	$ 15,000	$ 14,000
Other Liabilities | Galveston/Houston | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Total Joint Venture Debt, Net	$ 64,400	$ 64,400