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Segment Information (Tables)
3 Months Ended
Sep. 25, 2011
Segment Information [Abstract]  
Revenue and Gross Margin by Reportable Segments
 For the three months ended September 25, 2011 and September 26, 2010, revenues and gross margin by reportable segments were as follows (in thousands, except percentages):
 
   
Three Months Ended
September 25, 2011
  
Three Months Ended
September 26, 2010
 
Business Segment
 
 
Revenues
  
Percentage
of Total
  
Gross
Margin
  
Revenues
  
Percentage
of Total
  
Gross
Margin
 
Power Management Devices
 $111,207   36.7%  29.4% $115,524   41.1%  29.5%
Energy Saving Products
  76,058   25.1   41.4   60,016   21.4   42.5 
Automotive Products
  28,900   9.6   31.5   23,920   8.5   32.0 
Enterprise Power
  35,966   11.9   40.3   35,229   12.6   47.3 
HiRel
  48,842    16.1    51.8    44,197    15.7    52.1  
Customer segments total
  300,973   99.4   37.6   278,886   99.3   38.3 
Intellectual Property
  1,768    0.6    100.0    1,981    0.7    100.0  
Consolidated total
 $302,741    100.0%  37.9% $280,867    100.0%  38.7%