Intangible assets and goodwill, net - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) reporting_unit segment	Sep. 30, 2019 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 14,200,000	$ 9,200,000	$ 32,900,000	$ 27,300,000
Number of operating segments | segment			1
Number of reporting units | reporting_unit			1
Goodwill impairment			$ 0
Capitalized Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Capitalized Computer Software, Impairments	(200,000)
Software development costs capitalized		2,800,000	3,100,000	7,500,000
Amortization expense of capitalized software development costs	6,900,000	7,100,000	21,600,000	20,900,000
Costs related to stock based compensation	$ 100,000	$ 200,000	$ 300,000	$ 300,000
Minimum | Capitalized Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			3 years
Minimum | Acquired Technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			3 years
Minimum | Patents
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			10 years
Maximum | Capitalized Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			6 years
Maximum | Acquired Technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			8 years
Maximum | Patents
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			17 years