Segment Information and Geographic Data - Long Lived Assets by Geographical Region (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total long lived assets	$ 316,218	$ 318,039
Americas [Member]
Segment Reporting Information [Line Items]
Total long lived assets	177,690	175,821
Europe [Member]
Segment Reporting Information [Line Items]
Total long lived assets	124,687	127,395
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total long lived assets	$ 13,841	$ 14,823
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	44.00%	45.00%