STOCK OPTIONS (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of stock options and stock awards
The status of our stock options and stock awards are summarized as follows:
 
Number of options
 
Weighted average exercise price
Outstanding at December 31, 2014
2,864,189

 
$
3.69

Granted
830,922

 
2.21

Exercised
(97,500
)
 
2.25

Canceled and forfeited
(466,164
)
 
3.57

Outstanding at December 31, 2015
3,131,447

 
$
3.38

Granted
810,762

 
1.87

Exercised
(36,250
)
 
3.62

Canceled and forfeited
(153,750
)
 
3.69

Outstanding at December 31, 2016
3,752,209

 
$
3.04

 
 
 
 
Exercisable at December 31, 2016
2,006,702

 
$
3.79
Number of weighted average grant-date fair values of options
 
Number of options
 
Weighted average grant date fair value
Non-vested at December 31, 2015
1,707,411

 
$
2.63

Granted
810,762

 
0.89

Vested
(618,917
)
 
1.08

Forfeited
(153,750
)
 
1.75

Non-vested at December 31, 2016
1,745,506

 
1.25
Schedule of option fair value assumptions
 
2016 Grants
 
2015 Grants
 
2014 Grants
Option value
$0.80
-
$0.91
 
$0.90
-
$1.84
 
$3.50
-
$4.30
Risk-free rate
1.5%
-
1.8%
 
0.2%
-
1.6%
 
0.6%
Expected dividend yield
—%
 
—%
 
—%
Expected volatility
49.5%
-
50.3%
 
53.0%
-
54.0%
 
53.0%
-
54.0%
Expected term (in years)
6
 
4
-
10
 
4
-
10
Allocation of stock based compensation
Allocation of stock based compensation expense was as follows:
 
Year Ended December 31,
(In thousands)
2016
 
2015
 
2014
Cost of sales
$
2

 
$
3

 
$
8

Research and development
27

 
39

 
51

Salaries and related costs
780

 
526

 
329

Total
$
809

 
$
568

 
$
388