Leases - Summary of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating Leased Assets [Line Items]
Operating lease cost	$ 3,210	$ 2,894	$ 9,679	$ 8,389
Finance lease cost	19	0	58	0
Short-term lease cost	218	399	712	1,889
Cost of revenue
Operating Leased Assets [Line Items]
Operating lease cost	2,123	2,029	6,405	5,814
Finance lease, right-of-use asset, amortization	2	0	7	0
Finance lease, interest expense	17	0	51	0
Operating expense
Operating Leased Assets [Line Items]
Operating lease cost	$ 1,087	$ 865	$ 3,274	$ 2,575