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Note 10. Accrued Severance Expenses (Detail) - Severance Activity (Employee Severance [Member], USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 23, 2012
Employee Severance [Member]
 
Accrued severance Dec. 25, 2011 $ 178
Severance expense 3,524
Severance payments (2,687)
Accrued severance Sept. 23, 2012 $ 1,015