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EQUITY (Tables)
9 Months Ended
Sep. 30, 2014
Equity [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
A summary of stock option activity for the nine months ended September 30, 2014 is as follows:

 
 
Number 
of Options
(in shares)
 
Weighted
Average
Exercise
Price Per Share
 
Weighted Average Remaining Contractual Life
 
Aggregate Intrinsic Value
Outstanding at December 31, 2013
 
1,401,658

 
$
5.49

 
 
 
 
Granted
 
469,303

 
$
2.49

 
 
 
 
Exercised
 
(33,938
)
 
$
2.51

 
 
 
 
Forfeited or expired
 
(146,062
)
 
$
3.77

 
 
 
 
Outstanding at September 30, 2014
 
1,690,961

 
$
4.87

 
3.7 years
 
$

Exercisable at September 30, 2014
 
1,150,577

 
$
5.49

 
3.7 years
 
$

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The fair value of the options granted ($1.60 during the nine months ended September 30, 2014) was estimated on the grant dates using the Black-Scholes option-pricing model with the following weighted average assumptions:
        
Risk-free interest rate
 
2.4
%
Expected term of options
 
7.2 years

Expected annual volatility
 
63
%
Expected dividend yield
 
%
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Stock-based compensation expense included in the Company’s Condensed Statements of Operations for three and nine month periods ended September 30, 2013 and 2014 was as follows:

 
 
Nine months ended September 30,
 
Three months ended September 30,
 
 
2013
 
2014
 
2013
 
2014
Cost of sales
 
$
44

 
$
2

 
$
44

 
$
2

Research and development expenses, net of credits
 
31

 
59

 
10

 
33

Selling, general and administrative expenses
 
907

 
675

 
329

 
81

   Total stock-based compensation expense
 
$
982

 
$
736

 
$
383

 
$
116

Changes in outstanding warrants to purchase common stock
The Company previously issued warrants at exercise prices equal to or greater than market value of the Company’s common stock at the date of issuance.  A summary of warrant activity follows:
 
 
Number 
of Warrants
(in shares)
 
Weighted
Average
Exercise
Price Per Share
 
Weighted Average Remaining Contractual Life
Outstanding at December 31, 2013
 
285,281

 
$
3.18

 
 
Granted
 

 
 
 
 
Exercised
 

 

 
 
Forfeited or expired
 

 

 
 
Outstanding at September 30, 2014
 
285,281

 
$
3.18

 
3.8 years