Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 378,822	$ 378,822
Accumulated Amortization	(341,775)	(337,062)
Foreign Currency Translation Adjustment	(6,813)	(6,356)
Net Carrying Amount	30,234	35,404
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	267,706	267,706
Accumulated Amortization	(246,266)	(243,191)
Foreign Currency Translation Adjustment	(5,635)	(5,343)
Net Carrying Amount	15,805	19,172
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	52,109	52,109
Accumulated Amortization	(48,278)	(47,850)
Foreign Currency Translation Adjustment	203	232
Net Carrying Amount	4,034	4,491
Trademarks and tradenames
Finite-Lived Intangible Assets
Gross Carrying Amount	59,007	59,007
Accumulated Amortization	(47,231)	(46,021)
Foreign Currency Translation Adjustment	(1,381)	(1,245)
Net Carrying Amount	$ 10,395	$ 11,741