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Note 4 - Credit Facilities (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Debt [Table Text Block]
 
Interest Rate as of
  
 
    
 
    
 
    
 
    
 
  
 
December 31, 2018
  
2019
 
  
2020
 
  
2021
 
  
2022
 
  
2023
 
Brazil - Bradesco
0.37%
-
0.92%
    
910
      
–
      
–
      
–
      
–
  
Brazil – Santander
 
1.38%
 
    
98
      
–
      
–
      
–
      
–
  
USA - PNC Bank
 
5.02%
 
    
8,747
      
–
      
–
      
–
      
–
  
USA - Fifth Third Bank
 
4.97%
 
    
–
      
–
      
–
      
–
      
–
  
USA - Resource Plus Sellers
 
1.85%
 
    
333
      
334
      
300
      
300
      
700
  
National Australia Bank
 
6.60%
 
    
326
      
–
      
–
      
–
      
–
  
Mexico - BBVA / Shareholder
 
12.23%
 
    
–
      
153
      
–
      
–
      
–
  
Total
 
 
 
   $
10,414
     $
487
     $
300
     $
300
     $
700
  
Credit And Debt Facilities Unused Availability [Table Text Block]
   
December 31, 2018
    
December 31, 2017
  
Unused Availability:
                
United States
   $
4,253
     $
3,530
  
Australia
    
238
      
731
  
Brazil
    
304
      
1,554
  
Mexico
    
102
      
254
  
Total Unused Availability
   $
4,897
     $
6,069