Revenue - Assets Recognized from Costs to Obtain Contracts with Customers (Details)	6 Months Ended
	Jun. 30, 2020 USD ($)
Change in Capitalized Contract Costs [Roll Forward]
Balances at December 31, 2019	$ 43,035,000
Additional deferred commissions	15,862,000
Amortization of deferred commissions	(16,077,000)
Effects of foreign currency translation	(681,000)
Balances at June 30, 2020	42,139,000
Impairments of assets related to deferred contract costs	0
Capitalized Contract Cost, Net, Current	$ 19,000,000.0