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Stockholder's Equity (Tables)
3 Months Ended
Jun. 25, 2011
Stockholder's Equity  
Components Of Comprehensive Income
Three Months Ended
June 25, June 26,
2011 2010
Net income  $                  9,178  $                17,602
Adjustments to arrive at comprehensive income:
Change in unrealized gain on marketable securities                             5                       (100)
Comprehensive income  $                  9,183  $                17,502