Revenue - Summary of Allowance for Doubtful Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ (3,912)	$ (4,799)	$ (3,873)
Provision increase	(2,561)	(1,505)	(2,086)
Amounts written off, net of recoveries	1,368	2,269	1,305
Foreign currency translation adjustments and other	(44)	123	(145)
Balance, end of period	$ (5,149)	$ (3,912)	$ (4,799)