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Revenue and Accounts Receivable, Net - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Schedule of Allowance for Doubtful Accounts    
Balance at beginning of period $ 1,412 $ 1,492
Additions to costs and expenses 2 237
Write-offs/Foreign exchange effects (56) (48)
Balance at end of period $ 1,358 $ 1,681