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Note 2 - Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
    December 31,
    2019   2018   2017
Balance, beginning of the year   $
1,525
     $
1,914
     $
194
  
Amounts provided    
6
      
57
      
1,609
  
Amounts recovered    
(505
 )    
(360
 )    
–
  
Amounts written off    
(33
 )    
–
      
(6
 )
Translation adjustments    
(31
 )    
(86
 )    
117
  
Balance, end of the year   $
962
     $
1,525
     $
1,914
  
Property, Plant and Equipment Estimated Useful Lives [Table Text Block]
Asset   Estimated useful life 
(in years)
Computer equipment and software  
3
-
10
Furniture and fixtures  
5
-
7
Equipment  
5
-
20
Leasehold improvements  
 
Shorter of useful life or term of lease