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Comprehensive Income (Tables)
3 Months Ended
Dec. 31, 2011
Comprehensive Income [Abstract]  
Comprehensive income
Comprehensive Income for the three-month fiscal periods ended December 31, 2011 and January 1, 2011 was as follows:

   
Three Fiscal Months Ended
 
   
December 31,
2011
  
January 1,
2011
 
   
(expressed in thousands)
 
 Net income
 $15,539  $13,289 
 Change in cumulative translation adjustment
  (1,471)  (1,331)
 Pension benefit plan adjustments
  168   (326)
 Change in unrealized loss on derivative instruments
  608   261 
 Comprehensive income
 $14,844  $11,893