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Selected Quarterly Financial Information (Unaudited)
12 Months Ended
Dec. 31, 2011
Selected Quarterly Financial Information (Unaudited) [Abstract]  
Selected Quarterly Financial Information (Unaudited)
14. Selected Quarterly Financial Information (Unaudited)

Selected quarterly financial information (unaudited) follows:
 
  2011 
 
First
  
Second
  
Third
  
Fourth
  
Year
 
Net sales
 $33,188,612  $35,520,182  $36,089,946  $38,057,309  $142,856,049 
Gross margin
  6,316,341   6,932,112   6,556,418   7,546,735   27,351,606 
Selling and administrative expenses
  4,597,285   4,633,196   4,429,312   4,979,633   18,639,426 
Net income
  1,098,174   1,482,799   1,459,941   1,464,016   5,504,930 
                      
Net income per share:
                    
Basic
 $.18  $.24  $.24  $.24  $.89 
Diluted
 $.18  $.24  $.24  $.24  $.89 
                      
Weighted average shares outstanding:
                 
Basic
  6,162,711   6,166,883   6,172,193   6,212,875   6,178,664 
Diluted
  6,213,069   6,218,492   6,202,496   6,230,722   6,216,193 
 
  2010 
 
First
  
Second
  
Third
  
Fourth
  
Year
 
Net sales
 $30,954,555  $32,577,665  $33,958,681  $32,639,459  $130,130,360 
Gross margin
  6,058,975   6,898,345   6,918,522   6,796,381   26,672,223 
Selling and administrative expenses
  4,432,801   4,623,095   4,680,232   4,424,376   18,160,504 
Net (loss)/income
  1,009,660   1,410,869   1,489,748   1,632,728   5,543,005 
                      
Net (loss)/income per share:
                    
Basic
 $.17  $.23  $.24  $.27  $.91 
Diluted
 $.16  $.23  $.24  $.26  $.90 
                      
Weighted average shares outstanding:
                 
Basic
  6,065,256   6,074,700   6,131,401   6,147,473   6,104,711 
Diluted
  6,190,327   6,165,369   6,208,219   6,204,147   6,192,019 
 
Fiscal 2011 and 2010 consisted of four 13 week quarters totaling 52 weeks for each year.