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Note 7 - Goodwill and Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
2020
  $
332
 
2021
   
321
 
2022
   
309
 
2023
   
296
 
2024
   
281
 
Thereafter
   
517
 
Total
  $
2,056