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Accounts Receivable (Tables)
9 Months Ended
Sep. 23, 2012
Accounts Receivable [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
(Dollars in thousands)
 
 
 
 
September 23, 2012
 
December 25, 2011
Trade receivables
$
115,599

 
$
114,811

Other receivables
5,619

 
5,423

 
121,218

 
120,234

Allowance for doubtful accounts
(475
)
 
(339
)
Accounts receivable, net
$
120,743

 
$
119,895