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Note 10 - Deferred Revenues (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Contract with Customer, Asset and Liability [Table Text Block]
    December 31,
    2018   2017
Deferred revenues on maintenance contracts    
1,246
      
1,497
  
Deferred revenue on RPP    
339
      
405
  
Deferred revenue on sale of devices    
289
      
218
  
Deferred revenue on extension of warranty, included in sales contracts    
855
      
676
  
Deferred research and development grants    
173
      
61
  
Total    
2,902
      
2,857
  
Less long term portion    
(973
 )    
(562
 )
Current portion    
1,929
      
2,295
  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
    December 31,
2018
     
2019    
167
  
2020    
264
  
2021    
218
  
2022    
162
  
2023    
44
  
Total    
855
  
Change in Contract with Customer, Liability [Table Text Block] <div style="display: inline; font-family: times new roman; font-size: 10pt"><table cellpadding="0" cellspacing="0" align="center" style="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; min-; min-width: 700px;"> <tr style="vertical-align: bottom"> <td style="white-space: nowrap"> </td> <td style="font-weight: bold; border-bottom: Black 1pt solid"> </td> <td colspan="3" style="white-space: nowrap; font-weight: bold; text-align: center; border-bottom: Black 1pt solid">Total</td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="width: 82%; text-align: left">Beginning balance </td> <td style="width: 2%"> </td> <td style="width: 1%; text-align: left"> </td> <td style="width: 14%; text-align: right"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">676</div></td> <td style="white-space: nowrap; width: 1%; text-align: left"> </td> </tr> <tr style="vertical-align: bottom; background-color: White"> <td style="text-align: left">New extension of warranty </td> <td> </td> <td style="text-align: left"> </td> <td style="text-align: right"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">331</div></td> <td style="white-space: nowrap; text-align: left"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="padding-bottom: 1pt">Recognition of revenue </td> <td style="border-bottom: Black 1pt solid"> </td> <td style="border-bottom: Black 1pt solid; text-align: left"> </td> <td style="border-bottom: Black 1pt solid; text-align: right"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(152</div></td> <td style="white-space: nowrap; border-bottom: Black 1pt solid; text-align: left">)</td> </tr> <tr style="vertical-align: bottom; background-color: White"> <td style="padding-bottom: 2.5pt">Ending balance </td> <td style="border-bottom: Black 2.5pt double"> </td> <td style="border-bottom: Black 2.5pt double; text-align: left"> </td> <td style="border-bottom: Black 2.5pt double; text-align: right"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">855</div></td> <td style="white-space: nowrap; border-bottom: Black 2.5pt double; text-align: left"> </td> </tr> </table></div>