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Credit Losses (Tables)
 6 Months Ended
Jun. 30, 2020
Credit Loss [Abstract]  
Schedule Of Changes In Allowance For Credit Losses
Changes in our allowance for credit losses were as follows (in thousands):
 
Balance as of January 1, 2020
    $ 6,878  
Cumulative effect of change in accounting principle
      1,600  
Current period provision
      2,668  
Recoveries collected and other
      382  
Amounts written off
      (1,911 ) 
  
 
 
  
Balance as of June 30, 2020
    $ 9,617