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Note 13 - Lease Obligations (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Finance Lease, Liability, Fiscal Year Maturity [Table Text Block]
    December 31,
2020    
415
  
2021    
299
  
2022    
221
  
2023    
122
  
2024 and thereafter    
30
  
Total undiscounted minimum lease payments    
1,086
  
Less: amount representing interest    
(41
 )
Present value of minimum lease payments    
1,044
  
Less: current portion    
(392
 )
Long-term portion    
653
  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
    December 31,
2020    
980
  
2021    
758
  
2022    
474
  
2023    
349
  
2024 and thereafter    
171
  
Total undiscounted minimum lease payments    
2,732
  
Less: amount representing interest    
(48
 )
Present value of minimum lease payments    
2,684
  
Less: current portion    
(958
 )
Long-term portion    
1,726