Quarterly report pursuant to Section 13 or 15(d)

Definite-Lived Intangibles - Summary of Intangible Assets (Detail)

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Definite-Lived Intangibles - Summary of Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 29, 2014
Dec. 28, 2013
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Gross Carrying Amount $ 3,949 $ 3,949
Finite lived intangible assets, Accumulated Amortization and Impairment (2,432) (2,348)
Finite-lived intangible assets, Net Carrying Amount 1,517 1,601
Product design intellectual property [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Useful Life 4 years  
Finite-lived intangible assets, Gross Carrying Amount 2,750 2,750
Finite lived intangible assets, Accumulated Amortization and Impairment (1,907) (1,842)
Finite-lived intangible assets, Net Carrying Amount 843 908
Domain and trade names [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, Useful Life 10 years  
Finite-lived intangible assets, Gross Carrying Amount 1,199 1,199
Finite lived intangible assets, Accumulated Amortization and Impairment (525) (506)
Finite-lived intangible assets, Net Carrying Amount $ 674 $ 693