Annual report pursuant to Section 13 and 15(d)

Note 9 - Summary of Stock Options (Tables)

v3.6.0.2
Note 9 - Summary of Stock Options (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
 
 
Year Ended December 31, 2016
 
 
 
 
 
 
 
 
 
 
 
Weighted
 
 
 
 
 
 
 
 
 
 
 
Weighted
 
 
Average
 
 
Aggregate
 
 
 
Number
 
 
Average
 
 
Remaining
 
 
Intrinsic
 
 
 
of
 
 
Exercise
 
 
Contractual
 
 
Value
 
 
 
Shares
 
 
Price
 
 
Term (years)
 
 
(in thousands)
 
                                 
Options outstanding, beginning of period
   
1,022,195
    $
6.47
     
9.37
    $
1,194,180
 
Options granted
   
978,966
    $
6.00
     
 
     
 
 
Options exercised
   
(3,020
)   $
4.80
     
 
     
 
 
Options canceled
   
(88,377
)   $
7.41
     
 
     
 
 
Options outstanding, end of period
   
1,909,764
    $
6.19
     
9.12
    $
211,396
 
                                 
Vested and exercisable and expected to vest, end of period
   
1,761,430
    $
6.22
     
9.09
    $
204,619
 
                                 
Vested and exercisable, end of period
   
368,681
    $
7.51
     
8.04
    $
102,306
 
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
 
 
December 31, 2016
 
 
Price
 
 
Term (Years)
 
 
December 31, 2016
 
 
Price
 
                                               
 
$2.64
 
     
12,500
    $
2.64
     
8.37
     
5,209
    $
2.64
 
$3.68
-
$3.76
     
79,376
    $
3.75
     
8.10
     
36,382
    $
3.75
 
$4.80
-
$4.92
     
197,969
    $
4.80
     
7.80
     
109,150
    $
4.80
 
 
$5.22
 
     
595,034
    $
5.22
     
9.98
     
7,250
    $
5.22
 
 
$6.00
 
     
565,628
    $
6.00
     
8.96
     
141,412
    $
6.00
 
$6.24
-
$6.40
     
129,267
    $
6.35
     
9.15
     
-
    $
-
 
$7.00
-
$7.92
     
284,075
    $
7.71
     
9.49
     
23,363
    $
7.72
 
 
$9.92
 
     
38,135
    $
9.92
     
5.89
     
38,135
    $
9.92
 
$56.00
$296.00
     
7,780
    $
83.66
     
0.83
     
7,780
    $
83.66
 
 
 
 
     
1,909,764
    $
6.19
     
9.12
     
368,681
    $
7.51
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 
 
Year Ended
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
                 
Expected term (in years)
   
5
     
5
 
Average volatility
   
49
%    
63
%
Risk-free interest rate
   
1.78
%    
1.70
%
Dividend yield
   
0
%    
0
%
 
 
Year Ended
 
 
 
December 31,
 
 
 
2016
 
         
Expected term (in years)
   
10
 
Average volatility
   
51
%
Risk-free interest rate
   
2.43
%
Dividend yield
   
0
%
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 
 
Year Ended
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
                 
Research and development
  $
114
    $
18
 
Selling, general and administrative
   
867
     
202
 
Total
  $
981
    $
220