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Acquisitions - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Aug. 19, 2016
Oct. 31, 2014
Sep. 30, 2016
Acquisition      
Contingent consideration     $ (12,180)
Fashion Outlets of Chicago | Joint Venture      
Acquisition      
Purchase price   $ 69,987  
Purchase price funded by cash payment on acquisition   55,867  
Purchase price paid through assumption of debt by the Company   $ 14,120  
Contingent consideration $ 23,800