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Trade Accounts Receivable (Tables)
 6 Months Ended
Jun. 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 six month periods ended June 30, 2020:

(In thousands)
Three Months Ended June 30, 2020
  
Allowance for
Doubtful Accounts
  
Balance at March 31, 2020
  
$
7,027
  
Provision for expected credit losses
    
116
  
Accounts written off
    
(291
)
Divestiture
    
(2,174
)
Translation and other activity
    
212
  
Balance at June 30, 2020
  
$
4,890
  

(In thousands)
Six Months Ended June 30, 2020
  
Allowance for
Doubtful Accounts
  
Balance at December 31, 2019
  
$
6,913
  
Adoption of ASU 2016-13
    
853
  
Provision for expected credit losses
    
356
  
Accounts written off
    
(627
)
Divestiture
    
(2,174
)
Translation and other activity
    
(431
)
Balance at June 30, 2020
  
$
4,890