Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 03, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 400,406	$ 408,906
Accumulated Amortization	(315,141)	(307,347)
Foreign Currency Translation Adjustment	(3,588)	(620)
Net Carrying Amount	81,677	100,939
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	272,547	272,547
Accumulated Amortization	(220,147)	(210,479)
Foreign Currency Translation Adjustment	(3,489)	(1,610)
Net Carrying Amount	48,911	60,458
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	57,739	66,239
Accumulated Amortization	(48,351)	(54,524)
Foreign Currency Translation Adjustment	174	305
Net Carrying Amount	9,562	12,020
Trademarks and tradenames
Finite-Lived Intangible Assets
Gross Carrying Amount	70,120	70,120
Accumulated Amortization	(46,643)	(42,344)
Foreign Currency Translation Adjustment	(273)	685
Net Carrying Amount	$ 23,204	$ 28,461