XML 53 R19.htm IDEA: XBRL DOCUMENT v2.4.0.6
Organization and Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2013
Organization and Summary of Significant Accounting Policies [Abstract]  
Net sales by geographic area
                 
    Three Months Ended March 31,  
    2013     2012  

United States

    90 %      84 % 

Other Countries

    10       16  
   

 

 

   

 

 

 

Total

    100 %      100 % 
   

 

 

   

 

 

 
Weighted average number of shares outstanding and income per share
                 
    Three Months Ended March 31,  
    2013     2012  

Numerator for basic and diluted earnings per share:

               

Net income

  $ 3,297,821     $ 3,803,818  
   

 

 

   

 

 

 

Denominator:

               

Weighted average shares outstanding—basic

    52,746,178       55,700,395  

Dilutive effect of stock-based awards

    1,853,802       657,671  
   

 

 

   

 

 

 

Diluted weighted average shares outstanding

    54,599,980       56,358,066  
   

 

 

   

 

 

 

Anti-dilutive stock-based awards excluded

    1,232,111       6,537,984  
   

 

 

   

 

 

 

Net income per common share:

               

Basic

  $ 0.06     $ 0.07  

Diluted

  $ 0.06     $ 0.07  
Summary of changes in estimated product warranty liabilities
                 
    Three Months Ended March 31,  
    2013     2012  

Balance, January 1,

  $ 483,721     $ 427,459  

Utilization of accrual

    (156,052 )      (91,860 ) 

Warranty expense (recovery)

    168,768       (35,944 ) 
   

 

 

   

 

 

 

Balance, March 31,

  $ 496,437     $ 299,655