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Product Warranty (Tables)
6 Months Ended
Sep. 30, 2011
Product Warranty [Abstract] 
Change in the Company's warranty accrual
                 
    Six Months Ended  
    September 30, 2011     October 1, 2010  
    (In thousands)  

Balance, beginning of period

  $ 12,942     $ 11,208  

Change in liability for warranties issued in period

    2,922       4,220  

Settlements made (in cash or in kind) during the period

    (3,472     (3,086
   

 

 

   

 

 

 

Balance, end of period

  $ 12,392     $ 12,342