Segment Reporting and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 30, 2019	Sep. 26, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 126,492	$ 62,935	$ 401,368	$ 185,338
United States [Member]
Segment Reporting Information [Line Items]
Total revenue	16,036	8,816	58,062	26,879
Taiwan [Member]
Segment Reporting Information [Line Items]
Total revenue	30,028	14,304	97,206	32,446
Japan [Member]
Segment Reporting Information [Line Items]
Total revenue	13,698	8,962	42,632	16,330
China [Member]
Segment Reporting Information [Line Items]
Total revenue	31,911	14,666	90,295	54,887
South Korea [Member]
Segment Reporting Information [Line Items]
Total revenue	13,250	8,481	56,971	30,027
Singapore [Member]
Segment Reporting Information [Line Items]
Total revenue	5,690	2,396	14,619	6,007
Other Asia [Member]
Segment Reporting Information [Line Items]
Total revenue	3,706	1,386	4,252	3,425
Germany [Member]
Segment Reporting Information [Line Items]
Total revenue	3,760	735	12,352	3,260
Other Europe [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 8,413	$ 3,189	$ 24,979	$ 12,077