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Share Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Stock Based Compensation

All stock-based compensation is included in operating expenses for the periods as follows:

 

    Three Months Ended  
    March 31,  
    2020     2019  
Compensation cost recognized:                
Selling, general & administrative   $ 79,289     $ 366,523  
Research & development     6,753       3,216  
    $ 86,042     $ 369,739  
Schedule of Stock Option Activity

Stock option activity under the 2006 and 2015 Stock Option Plans (collectively, the “Plans”) during the periods indicated below were as follows:

 

    Number of Shares Subject to Issuance     Weighted-average Exercise Price     Weighted-average Remaining Contractual Term     Aggregate Intrinsic Value  
                         
Outstanding at December 31, 2019     1,421,623     $ 1.78       1.96 years     $ 8,113,777  
Exercised     (117,758 )     1.23                  
Outstanding at March 31, 2020     1,303,865     $ 1.83        1.84 years     $ 2,031,065  
                                 
Exercisable at March 31, 2020     1,006,783     $ 1.59        1.30 years     $ 1,816,137  
Schedule of Restricted Stock Units Outstanding

The compensation expense incurred by the Company for RSUs is based on the closing market price of the Company’s common stock on the date of grant and is amortized ratably on a straight-line basis over the requisite service period and charged to general and administrative expense with a corresponding increase to additional paid-in capital.

 

    Number of
Shares		     Weighted
Average
Grant Date
Fair Value		     Aggregate
Intrinsic
Value		  
                   
Outstanding at December 31, 2019     2,670     $ 7.49     $ -  
Granted     10,325       3.39          
Vested and settled in shares     (2,670 )     7.49          
                         
Outstanding at March 31, 2020     10,325     $ 3.39     $ -