Organization (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) ft² property	Jun. 30, 2019 ft² property
Entity Information [Line Items]
Number of retail properties | property	65	71
Square Feet | ft²	10,798,909	12,112,475
Income tax benefit related to the CARES Act | $	$ 1,172
Corporate Joint Venture
Entity Information [Line Items]
Number of managed assets | property	10	12
Square Feet | ft²	2,470,134	2,576,844
Wholly-Owned Retail Properties
Entity Information [Line Items]
Number of retail properties | property	55	59
Square Feet | ft²	8,328,775	9,535,631