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Restructuring and Excess Facilities (Tables)
6 Months Ended
Jul. 01, 2011
Restructuring and Excess Facilities [Abstract]  
Activities in the restructuring accrual
         
    Excess  
    Facilities  
    (In thousands)  
Balance at December 31, 2010
  $ 2,920  
Provisions
    517  
Sublease income
    1,050  
Cash payments
    (1,011 )
 
     
Balance at July 1, 2011
  $ 3,476