Revenue - Summary of Changes in Deferred Revenue (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Change in Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning balance	$ 118,939
Deferral of revenue	80,744
Recognition of deferred revenue	(60,410)
Foreign currency translation	(1,852)
Deferred revenue, ending balance	$ 137,421