Segment information - Revenues Generated in Domestic and Foreign Country (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 2,288,432	$ 1,940,008	$ 1,907,672
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	2,154,672	1,816,531	1,787,843
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 133,760	$ 123,477	$ 119,829