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Net Income per Share
9 Months Ended
Oct. 01, 2011
Net Income per Share [Abstract] 
Net Income per Share
5. Net Income per Share
Basic earnings per share is based on the weighted average number of shares of common stock outstanding, and diluted earnings per share is based on the weighted average number of shares of common stock outstanding and all potentially dilutive common stock equivalents outstanding. Common stock equivalents are included in the per share calculations when the effect of their inclusion would be dilutive.
The following is a reconciliation of basic to diluted net income per share:
                                 
    Quarter Ended     Year to Date Ended  
    October 1,     October 2,     October 1,     October 2,  
    2011     2010     2011     2010  
 
                               
Net income
  $ 12,140     $ 6,574     $ 31,779     $ 19,152  
 
                               
Shares used in net income per common share — basic
    26,546       26,414       26,508       26,364  
 
                               
Incremental shares of unvested restricted common stock
    109       81       204       113  
 
                       
Shares used in net income per common share — diluted
    26,655       26,495       26,712       26,477  
 
                               
Earnings per share:
                               
Basic
  $ 0.46     $ 0.25     $ 1.20     $ 0.73  
Diluted
  $ 0.46     $ 0.25     $ 1.19     $ 0.72  
The Company excluded 784,890 shares related to the Convertible Notes (See Note 12) from the above earnings per share calculation as these shares were anti-dilutive.