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Unaudited Quarterly Financial Data Unaudited
 12 Months Ended
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Information [Text Block]
17.UNAUDITED QUARTERLY FINANCIAL DATA

 

The following tables present the quarterly information for the years ended December 31, 2014, 2013 and 2012, respectively:

 

  Three Months Ended 
  March 31  June 30  September 30  December 31 
Fiscal 2014:            
Product sales $2,081,752  $1,539,719  $1,770,129  $2,205,275 
Gross margin  1,149,895   878,523   1,077,896   1,342,722 
Product development expenses  594,209   760,672   361,232   462,965 
Net operating income (loss)  12,561   (458,667)  40,853   198,856 
Net (loss) income  (13,335)  (294,781)  10,330   130,626 
Net (loss) income per common share:                
Basic ($0.00) ($0.10) $0.00  $0.04 
Diluted ($0.00) ($0.10) $0.00  $0.04 
                 
Fiscal 2013:                
Product sales $1,846,734  $1,366,493  $1,234,701  $1,559,248 
Gross margin  1,053,567   783,677   615,717   607,644 
Product development expenses  266,479   271,858   290,853   325,010 
Net operating income (loss)  326,666   23,722   (159,967)  (209,975)
Net income (loss)  204,310   6,452   57,336   (150,703)
Net income (loss) per common share:                
Basic $0.07  $0.00  $0.02  ($0.05)
Diluted $0.07  $0.00  $0.02  ($0.05)
                 
Fiscal 2012:                
Product sales $1,717,109  $1,175,126  $1,076,749  $1,420,951 
Gross margin  1,012,568   670,518   620,958   750,215 
Product development expenses  247,807   211,706   223,771   234,316 
Net operating income (loss)  281,233   37,397   (86,126)  12,497 
Net income (loss)  154,761   15,187   (63,574)  (16,862)
Net income (loss) per common share:                
Basic $0.05  $0.01  ($0.02) ($0.01)
Diluted $0.05  $0.01  ($0.02) ($0.01)