Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Share-Based Compensation - Summary of Share-based Compensation from Options, Warrants and Stock Awards (Detail)

v2.4.0.8
Stockholders' Equity and Share-Based Compensation - Summary of Share-based Compensation from Options, Warrants and Stock Awards (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Sep. 28, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense $ 687 $ 315 $ 1,691 $ 1,065
Marketing expense
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense 157 77 374 230
General and administrative expense
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense 424 191 1,051 693
Fulfillment expense
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense 72 25 170 81
Technology expense
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation expense $ 34 $ 22 $ 96 $ 61