Summary of Significant Accounting Policies - Activity Related to the Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 7,743	$ 5,338
Bad debt expense	113	2,821
Amount of receivables recovered (written off)	(61)	(335)
Foreign currency translation and other	139	110
Balance at end of period	$ 7,934	$ 7,934