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Stockholders Equity (Tables)
 3 Months Ended
Mar. 31, 2016
Equity [Abstract]  
Summary of Stock Option Plans Activity

A summary of the Plans’ stock option activity is as follows:

 

 

 

Number of

Shares

 

 

Weighted-

Average

Exercise Price

Per Share

 

 

Weighted-

Average

Remaining

Contractual

Life (Years)

 

 

Aggregate

Intrinsic Value

 

Balance at December 31, 2015

 

 

736,645

 

 

$

4.18

 

 

7.5

 

 

$

947,794

 

Granted

 

 

312,700

 

 

2.88

 

 

 

 

 

 

 

 

 

Forfeited

 

 

(4,285

)

 

5.38

 

 

 

 

 

 

 

 

 

Balance at March 31, 2016

 

 

1,045,060

 

 

3.64

 

 

 

8.0

 

 

$

457,858

 

Vested and expected to vest at March 31, 2016

 

 

938,460

 

 

3.64

 

 

7.8

 

 

$

424,453

 

Exercisable at March 31, 2016

 

 

477,472

 

 

3.51

 

 

6.5

 

 

$

240,992