Goodwill and Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 126,544	$ 84,589
Accumulated amortization	(27,621)	(17,489)
Net carrying amount	98,923	67,100
Developed Technology
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	14,395	9,485
Accumulated amortization	(4,140)	(4,232)
Net carrying amount	$ 10,255	$ 5,253
Developed Technology | Weighted-Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	3 years	3 years
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 15,136	$ 11,437
Accumulated amortization	(5,496)	(2,724)
Net carrying amount	$ 9,640	$ 8,713
Tradenames | Weighted-Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	3 years 6 months 7 days	3 years 6 months
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 97,013	$ 63,667
Accumulated amortization	(17,985)	(10,533)
Net carrying amount	$ 79,028	$ 53,134
Customer Relationships | Weighted-Average
Finite Lived Intangible Assets [Line Items]
Weighted average life (years)	7 years 4 months 24 days	6 years 10 months 2 days