text: Total income tax expense for continuing operations differs from the amount that would be provided by applying the statutory federal income tax rate to 
  pretax earnings as illustrated below (in thousands): 
  
  YEAR ENDED DECEMBER 31, 
  2003  2002  2001 
  
  Income tax expense at the statutory federal income tax rate  $  2,298  $  1,858  $  2,062 
  
  Increase (decrease) resulting from: 
  
  State income taxes  34  80 
  
  Decrease in valuation allowance  —  — 
  
  R&D credit  (100)  (164) 
  
  Foreign sales benefit  (250)  (244) 
  
  Other, net  (103)  (127) 
  
  Total income tax expense  $  1,879  $  1,403  $  1,803 