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Quarterly Financial Data (Unaudited)
12 Months Ended
Mar. 31, 2012
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Data (Unaudited)
(14)        Quarterly Financial Data (Unaudited)
 
Summarized unaudited quarterly financial data for fiscal 2012 and 2011 is as follows (in thousands, except for per share amounts):
 
Quarter Ended:
 
June 30, 2011
   
September 30, 2011
   
December 31, 2011
   
March 31, 2012
 
                         
Sales
  $ 73,578     $ 58,225     $ 50,523     $ 55,924  
Gross Profit
  $ 24,110     $ 19,934     $ 17,154     $ 18,967  
Income from operations
  $ 7,565     $ 6,080     $ 6,102     $ 6,275  
Net income
  $ 4,837     $ 3,930     $ 3,898     $ 3,993  
Diluted net income per common share
  $ 0.22     $ 0.19     $ 0.19     $ 0.20  
                                 
Quarter Ended:
 
June 30, 2010
   
September 30, 2010
   
December 31, 2010
   
March 31, 2011
 
                                 
Sales
  $ 74,369     $ 61,245     $ 45,118     $ 50,910  
Gross Profit
  $ 27,226     $ 22,330     $ 16,925     $ 17,475  
Income from operations
  $ 11,827     $ 7,727     $ 7,027     $ 6,443  
Net income
  $ 7,225     $ 4,977     $ 4,522     $ 4,147  
Diluted net income per common share
  $ 0.32     $ 0.22     $ 0.20     $ 0.19