Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan - Additional Information (Detail)

v2.4.0.6
Employee Benefit Plan - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Dec. 25, 2011
Dec. 26, 2010
Employee Benefit Plans [Line Items]      
Contributions relating to the 401(k) Plan $ 119 $ 80 $ 50