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Revenue and Accounts Receivable, Net - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Schedule of Allowance for Doubtful Accounts    
Balance at beginning of period $ 1,412 $ 1,492
Additions to costs and expenses 1 271
Write-offs/Foreign exchange effects (69) 34
Balance at end of period $ 1,344 $ 1,797