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Note 9 - Allowance for Credit Losses (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
   

Three Months Ended June 30, 2020

   

Six Months Ended June 30, 2020

 

Balance at beginning of period

  $ 7,668     $ 6,968  
Adoption of ASU 2016-13     -       1,147  

Provision for credit losses

    3,513       3,830  

Charge-offs

    (116 )     (279 )

Currency translation

    32       (569 )

Balance at end of period

  $ 11,097     $ 11,097