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Share-Based Compensation Plan (Tables)
 12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock options' weighted average assumptions

The Company calculates the value of each stock option grant, estimated on the date of grant, using binomial lattice option pricing model. The weighted-average estimated fair value of stock options granted during 2014 and 2013 was $0.96 and $0.77, respectively, using the following weighted-average assumptions:

 

   Years Ended December 31,
   2014  2013
Risk-free interest rate (%)    2.56%   2.01%
Dividend yield    —      —   
Volatility factor    87.44%   85.93%
Expected option life (years)    4.6    4.7 
Schedule of stock-based compensation, stock option, activity

The table below presents information related to sock option activity for the years ended December 31, 2014 and 2013:

 

   December 31,
   2014  2013
Total intrinsic value of stock options exercised  $20,684   $4,140 
Cash received from stock option exercises   44,771    6,480 
Stcok-based compensation arrangement by stock-based payment award, options, vested and unvested, outstanding and exercisable

Changes in stock options for the years ended December 31, 2014 and 2013 are as follows:

 

          Outstanding Options
 
   

 

Options

Available

For Grant

    

 

Number

of Shares

    

Weighted

Average

Price Per Share

    Remaining Contractual Term
(in years)		    

 

 

Intrinsic
Value

 
Balance at December 31, 2012    62,438    1,624,188   $2.47           
   Increase in shares authorized    194,442    —                  
   Granted    (241,900)   241,900   $1.16           
   Exercised    —      (6,000)  $1.08           
   Canceled    200,918    (200,918)  $2.41           
Balance at December 31, 2013    215,898    1,659,170   $2.29           
   Increase in shares authorized    194,682    —                  
   Granted    (382,000)   382,000   $1.41           
   Exercised    —      (31,475)  $1.50           
   Canceled    118,637    (118,637)  $2.65           
Balance at December 31, 2014    147,217    1,891,058   $2.09    6.33   $969,705 
Exercisable         1,430,394   $2.32    5.67    526,341 
Unvested         460,664   $1.42    8.17    443,364 
Schedule of stock-based compensation, shares authorized under stock option plans, by exercise price range

The following table summarizes information about stock options outstanding and exercisable at December 31, 2014:

 

  Options Outstanding  Options Exercisable
Range of
Exercise
Prices		 Number of
Options Outstanding		  Weighted Average Remaining Life (Years)  Weighted
Average Exercise Price		  Number of Options Exercisable  Weighted Average Exercise Price
$0.95 - $1.10  478,986   8.58  $0.95   212,861  $1.05
$1.20 - $1.25  58,000   8.50  $1.22   30,583  $1.20
$1.50 - $1.80  207,088   7.25  $1.71   180,747  $1.72
$1.89 - $2.27  340,035   6.42  $2.03   275,923  $2.04
$2.35 - $2.74  225,967   2.00  $2.50   149,298  $2.52
$3.04 - $3.45  577,792   5.50  $3.08   577,792  $3.08
$6.90 - $7.20  1,050   3.50  $6.94   1,050  $6.94
$10.00 - $11.70  1,790   1.67  $10.80   1,790  $10.80
$15.00  350   0.08  $15.00   350  $15.00
$0.95 - $15.00  1,891,058   6.33  $2.09   1,430,394  $2.32
Schedule of employee service stock-based compensation, allocation of recognized period costs

The stock-based compensation expense included in the Company’s statement of operations for the years ended December 31, 2014 and 2013, consisted of the following:

 

   Years Ended December 31,
Income Statement Classification  2014  2013
  Cost of revenues   $21,597   $26,196 
  Research and development    54,679    72,104 
  Sales and marketing    33,030    43,970 
  General and administrative    95,372    107,434 
   $204,678  $249,704