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Business Segments, Geographic Data, and Sales by Major Customers - Additional Information (Detail)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2018
USD ($)
Segment
Customer
Dec. 31, 2017
Segment
Customer
Mar. 31, 2018
USD ($)
Mar. 15, 2018
Store
Segment Reporting Information [Line Items]        
Number of reporting segments | Segment 3 3    
Toys "R" Us        
Segment Reporting Information [Line Items]        
Pre and post-petition gross accounts receivable     $ 35.1  
Claim filed with insurance carrier $ 12.0      
Proceeds from post-petition consolidated accounts receivable 1.9      
Post and pre-petition consolidated accounts receivable, net 35.1      
Pre-petition consolidated accounts receivable, reserved $ 21.2      
Toys "R" Us | United States        
Segment Reporting Information [Line Items]        
Number of stores | Store       735
Net Accounts Receivable | Customer Concentration Risk        
Segment Reporting Information [Line Items]        
Number of major customers | Customer 3 3    
Net Accounts Receivable | Toys "R" Us | Customer Concentration Risk        
Segment Reporting Information [Line Items]        
Concentration risk percentage 17.50% 26.40%    
Net Accounts Receivable | Three Largest Customers | Customer Concentration Risk        
Segment Reporting Information [Line Items]        
Concentration risk percentage 48.10% 60.60%