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Supplemental Cash Flow Information (Tables)
3 Months Ended
Mar. 29, 2013
Supplemental Cash Flow Information [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
    Three Months Ended
     March 29,  March 30,
 (in thousands) 2013  2012
 Noncash investing and financing activities:
  Common stock contributed to 401(k) Plan$2,477 $4,793
  Property, plant and equipment purchases included      
   in accounts payable 1,219  6,002
         
 Cash paid during the period for:     
  Interest$ 1,556 $ 429
  Income taxes  494   547
         
 Acquisition of noncash assets $ - $ 14,379
 Liabilities assumed  -   1,226