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Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2013
Dec. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Trade receivables $ 114,584 $ 91,747
Other receivables 6,397 7,293
Receivables, current 120,981 99,040
Allowance for doubtful accounts (972) (573)
Accounts receivable, net $ 120,009 $ 98,467