Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Summary of Stock Options (Tables)

v3.7.0.1
Note 8 - Summary of Stock Options (Tables)
6 Months Ended
Jun. 30, 2017
Notes Tables  
Share-based Compensation, Stock Options, Activity [Table Text Block]
 
 
Six Months Ended June 30, 2017
 
 
 
 
 
 
 
 
 
 
 
Weighted
 
 
 
 
 
 
 
 
 
 
 
Weighted
 
 
Average
 
 
Aggregate
 
 
 
Number
 
 
Average
 
 
Remaining
 
 
Intrinsic
 
 
 
of
 
 
Exercise
 
 
Contractual
 
 
Value
 
 
 
Shares
 
 
Price
 
 
Term (years)
 
 
(in thousands)
 
                                 
Options outstanding, beginning of period
   
1,909,764
    $
6.19
     
9.12
    $
211,396
 
Options granted
   
420,985
    $
5.88
     
 
     
 
 
Options exercised
   
(7,730
)   $
4.02
     
 
     
 
 
Options cancelled
   
(35,447
)   $
5.64
     
 
     
 
 
Options outstanding, end of period
   
2,287,572
    $
6.15
     
8.82
    $
3,290,039
 
                                 
Vested and exercisable and expected to vest, end of period
   
2,135,320
    $
6.17
     
8.79
    $
3,076,175
 
                                 
Vested and exercisable, end of period
   
603,985
    $
6.83
     
7.94
    $
935,383
 
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
 
 
 
 
 
Options Outstanding
 
 
Options Exercisable
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Number
 
 
Weighted
 
 
Average
 
 
Number
 
 
Weighted
 
 
 
 
 
 
Outstanding
 
 
Average
 
 
Remaining
 
 
Exercisable
 
 
Average
 
Range of
 
 
as of
 
 
Exercise
 
 
Contractual
 
 
as of
 
 
Exercise
 
Exercise Prices
 
 
June 30, 2017
 
 
Price
 
 
Term (Years)
 
 
June 30, 2017
 
 
Price
 
                                               
 
$2.64
 
     
12,500
    $
2.64
     
7.87
     
6,771
    $
2.64
 
$3.68
-
$3.76
     
66,876
    $
3.76
     
7.61
     
39,011
    $
3.76
 
$4.46
-
$4.92
     
427,829
    $
4.62
     
8.58
     
141,577
    $
4.78
 
 
$5.22
 
     
586,409
    $
5.22
     
9.48
     
75,491
    $
5.22
 
 
$6.00
 
     
557,753
    $
6.00
     
8.47
     
209,161
    $
6.00
 
$6.24
-
$6.40
     
117,965
    $
6.35
     
8.34
     
43,466
    $
6.35
 
$7.00
-
$7.92
     
472,325
    $
7.67
     
9.36
     
42,593
    $
7.70
 
 
$9.92
 
     
38,135
    $
9.92
     
5.40
     
38,135
    $
9.92
 
$56.00
-
$296.00
     
7,780
    $
83.66
     
0.33
     
7,780
    $
83.66
 
 
 
 
     
2,287,572
    $
6.15
     
8.82
     
603,985
    $
6.83
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
                                 
Expected term (in years)
   
5
     
5
     
5
     
5
 
Average volatility
   
48
%    
47
%    
48
%    
65
%
Risk-free interest rate
   
1.76
%    
1.26
%    
1.90
%    
1.53
%
Dividend yield
   
0
%    
0
%    
0
%    
0
%
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 
 
Three Months Ended
 
 
 
Six Months Ended
 
 
 
 
June 30,
 
 
 
 
June 30,
 
 
 
2017
 
 
2016
 
 
2017
 
 
2016
 
                                 
Cost of revenue
  $
4
    $
-
    $
7
    $
-
 
Research and development
   
57
     
28
     
108
     
49
 
Selling, general and administrative
   
394
     
174
     
712
     
341
 
Total
  $
455
    $
202
    $
827
    $
390