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Current Expected Credit Losses (Tables)
9 Months Ended
Sep. 30, 2020
Credit Loss [Abstract]  
Accounts Receivable, Allowance for Credit Loss
The change in the allowance for expected credit losses from December 31, 2019 to September 30, 2020, consists of the following (in thousands):
Allowance for Expected Credit Losses
Balance at December 31, 2019$(3,169)
Provision for expected credit losses(2,102)
Write-offs2,672 
Recoveries(265)
Balance at September 30, 2020$(2,864)