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Subsequent Events - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 15, 2018
Sep. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
Subsequent Event [Line Items]        
Bad debt reserve     $ 9,864 $ 5,386
Sears Holding Corporation        
Subsequent Event [Line Items]        
Revenue recognized during period   $ 3,900    
Subsequent Event | Sears Holding Corporation        
Subsequent Event [Line Items]        
Bad debt reserve $ 8,200