Segment Information and Geographic Data - Long Lived Assets by Geographical Region (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total long lived assets	$ 318,039	$ 52,468
Americas [Member]
Segment Reporting Information [Line Items]
Total long lived assets	175,821	35,186
Europe [Member]
Segment Reporting Information [Line Items]
Total long lived assets	127,395	13,913
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total long lived assets	$ 14,823	$ 3,369
Outside Of Americas [Member] | Assets Total [Member] | Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Percentage of long lived assets held outside of the Americas	45.00%	33.00%