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Accounts Receivable - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Receivables [Abstract]        
Write-offs $ (2,675) $ (2,321) $ (18,614) $ (2,321)