Goodwill and Intangible Assets, Net - Intangible Assets, Net by Major Class (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-lived intangible assets
Gross carrying amount	$ 135,886	$ 122,687
Accumulated amortization	70,041	39,768
Net carrying amount	$ 65,845	$ 82,919
Developed technology and patents
Finite-lived intangible assets
Weighted-average remaining useful life	3 years 6 months	1 year 7 months 6 days
Gross carrying amount	$ 56,086	$ 42,887
Accumulated amortization	43,434	26,309
Net carrying amount	$ 12,652	$ 16,578
Contractual relationship – cities and user relationships
Finite-lived intangible assets
Weighted-average remaining useful life	7 years 9 months 18 days	7 years 8 months 12 days
Gross carrying amount	$ 79,800	$ 79,800
Accumulated amortization	26,607	13,459
Net carrying amount	$ 53,193	$ 66,341