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Summary of Significant Accounting Policies - Activity Related to the Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance at beginning of period $ 5,782 $ 5,338
Bad debt expense 1,792 2,708
Amount of receivables recovered (written off) 12  
Amount of receivables recovered (written off)   (274)
Foreign currency translation and other 157 (29)
Balance at end of period $ 7,743 $ 7,743