Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets
Gross carrying Amount	$ 798,520	$ 743,280
Accumulated amortization	449,454	409,328
Net carrying value	349,066	333,952
Developed Technology
Finite-Lived Intangible Assets
Gross carrying Amount	282,951	272,334
Accumulated amortization	218,900	204,689
Net carrying value	64,051	67,645
Trademarks and Trade names
Finite-Lived Intangible Assets
Gross carrying Amount	30,004	29,106
Accumulated amortization	17,788	16,326
Net carrying value	12,216	12,780
Customer Relationships
Finite-Lived Intangible Assets
Gross carrying Amount	449,270	405,537
Accumulated amortization	184,851	161,551
Net carrying value	264,419	243,986
Other Intangible Assets
Finite-Lived Intangible Assets
Gross carrying Amount	36,295	36,303
Accumulated amortization	27,915	26,762
Net carrying value	$ 8,380	$ 9,541