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Summary of Significant Accounting Policies - Activity Related to the Allowance for Doubtful Accounts (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]  
Balance at beginning of period $ 5,338
Bad debt expense 916
Amount of receivables written off (286)
Foreign currency translation and other (186)
Balance at end of period $ 5,782