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Note 5 - Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]

Level 2

 

June 30,
2020

   

December 31,
2019

 

(Liabilities) Assets:

               

Derivative financial instruments

  $ (616 )   $ (325 )