Organization and Significant Accounting Policies - Customers as Percentage of Total Revenues (Detail) - Sales [Member] - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Lam Research Corporation [Member]
Concentration Risk [Line Items]
Total	33.80%	41.00%	35.20%	39.10%
Applied Materials, Inc. [Member]
Concentration Risk [Line Items]
Total	23.20%	22.70%	21.50%	22.90%
Total Customer
Concentration Risk [Line Items]
Total	57.00%	63.70%	56.70%	62.00%