Quarterly report pursuant to Section 13 or 15(d)

Developments of Consolidated Outlet Centers (Narrative) (Details)

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Developments of Consolidated Outlet Centers (Narrative) (Details)
ft² in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
ft²
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
ft²
Jun. 30, 2016
USD ($)
Jul. 31, 2016
ft²
Interest costs capitalized for development activities | $   $ 689 $ 634 $ 1,200 $ 1,100  
Fort Worth [Member]            
Payments to acquire land | $ $ 11,200          
Square Feet | ft²   352   352    
Lancaster [Member]            
Square Feet | ft²   123   123   123