Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 04, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 400,406	$ 408,906
Accumulated Amortization	(304,384)	(307,347)
Foreign Currency Translation Adjustment	(3,172)	(620)
Net Carrying Amount	92,850	100,939
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	272,547	272,547
Accumulated Amortization	(213,459)	(210,479)
Foreign Currency Translation Adjustment	(3,198)	(1,610)
Net Carrying Amount	55,890	60,458
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	57,739	66,239
Accumulated Amortization	(47,209)	(54,524)
Foreign Currency Translation Adjustment	150	305
Net Carrying Amount	10,680	12,020
Trademarks and tradenames
Finite-Lived Intangible Assets
Gross Carrying Amount	70,120	70,120
Accumulated Amortization	(43,716)	(42,344)
Foreign Currency Translation Adjustment	(124)	685
Net Carrying Amount	$ 26,280	$ 28,461