Quarterly report pursuant to Section 13 or 15(d)

Restructuring Costs - Additional Information (Detail)

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Restructuring Costs - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Employees
Mar. 30, 2013
Employees
Sep. 27, 2014
Employees
warehouse
Sep. 28, 2013
Dec. 28, 2013
Restructuring Cost and Reserve [Line Items]          
Reduction of employees head count     77    
Severance liability included in accrued expenses     $ 6,902   $ 5,959
Number of remaining warehouses     2    
Inventory charge     130    
Reduction in sale price     348    
Cost of sales charge     478    
Reduction of workforce 15 176      
Severance charges       723  
Marketing expense
         
Restructuring Cost and Reserve [Line Items]          
Severance charges       394  
General and administrative expense
         
Restructuring Cost and Reserve [Line Items]          
Severance charges       109  
Fulfillment expense
         
Restructuring Cost and Reserve [Line Items]          
Severance charges       58  
Technology expense
         
Restructuring Cost and Reserve [Line Items]          
Severance charges       162  
United States
         
Restructuring Cost and Reserve [Line Items]          
Reduction of workforce   13      
Philippines
         
Restructuring Cost and Reserve [Line Items]          
Reduction of workforce   163      
Severance Liability
         
Restructuring Cost and Reserve [Line Items]          
Severance liability included in accrued expenses     $ 260