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Trade Accounts Receivable (Tables)
 9 Months Ended
Sep. 30, 2020
Trade Accounts Receivable [Abstract]  
Changes in Allowance for Doubtful Accounts
The following table summarizes the changes in the allowance for doubtful accounts during the three and nine month periods ended September 30, 2020:

(In thousands)
Three Months Ended September 30, 2020
  
Allowance for
Doubtful Accounts
  
Balance at June 30, 2020
  
$
4,890
  
Provision for expected credit losses
    
148
  
Accounts written off
    
(453
)
Translation and other activity
    
207
  
Balance at September 30, 2020
  
$
4,792
  

(In thousands)
Nine Months Ended September 30, 2020
  
Allowance for
Doubtful Accounts
  
Balance at December 31, 2019
  
$
6,913
  
Adoption of ASU 2016-13
    
853
  
Provision for expected credit losses
    
504
  
Accounts written off
    
(1,080
)
Divestiture
    
(2,174
)
Translation and other activity
    
(224
)
Balance at September 30, 2020
  
$
4,792