Segment Reporting and Geographic Information - (Tables)

3 Months Ended

Mar. 28, 2020

Segment Reporting [Abstract]

Schedule of Revenue from External Customers by Products and Services

The following table lists the different sources of revenue:

	Three Months Ended
	March 28,				March 31,
	2020				2019
Systems and software		114,330	82	%		49,809	82	%
Parts		13,575	10	%		8,077	13	%
Services		12,023	8	%		3,006	5	%
Total revenue	$	139,928	100	%	$	60,892	100	%

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area

For geographical revenue reporting, revenue is attributed to the geographic location to which the product is shipped.  Revenue by geographic region is as follows:

	Three Months Ended
	March 28,		March 31,
	2020		2019
Revenue from third parties:
United States	$	19,648	$	9,131
Taiwan		35,181		11,031
Japan		15,027		3,940
China		31,383		16,044
South Korea		20,757		10,771
Singapore		2,590		2,016
Other Asia		273		993
Germany		6,082		1,850
Other Europe		8,987		5,116
Total revenue	$	139,928	$	60,892

Schedule of Revenue by Major Customer by Reporting Segments

The following customers accounted for more than 10% of total revenue for the indicated periods:

	Three Months Ended
	March 28,			March 31,
	2020			2019
Customer A		17.5	%		3.8	%
Customer B		17.0	%		6.2	%
Customer C		5.7	%		27.2	%