XML 36 R25.htm IDEA: XBRL DOCUMENT v3.19.1
Note 9 - Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
   
Number of shares
   
Weighted average
exercise price
 
                 
Options outstanding at beginning of year
   
624,256
    $
8.87
 
Granted
   
     
 
Less:
               
Exercised
   
     
 
Forfeited prior to vesting
   
     
 
Canceled or expired
   
(53,733
)
   
9.49
 
Options outstanding at March 31, 201
9
   
570,523
     
8.81
 
Options exercisable at end of March 31, 201
9
   
514,438
    $
8.63
 
Share-based Payment Arrangement, Cost by Plan [Table Text Block]
   
Three months ended March 31,
 
   
201
9
   
201
8
 
Cost of goods sold
  $
2
    $
5
 
Sales and marketing
   
1
     
10
 
Research and product development
   
12
     
30
 
General and administrative
   
59
     
92
 
    $
74
    $
137