Revenue (Tables)

6 Months Ended

Jul. 01, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue from Contracts with Customers

The following tables represent a disaggregation of revenue from contracts with customers for the three and six months ended July 1, 2023 and July 2, 2022.

Major Products and Service Lines

	Three Months Ended July 1, 2023								Three Months Ended July 2, 2022
	(In thousands)
	HDD		PV		ASP		Total		HDD		DCP		PV		Total
Systems, upgrades and spare parts	$	9,351	$	10	$	11	$	9,372	$	7,756	$	1	$	82	$	7,839
Field service		929		—		—		929		1,421		43		4		1,468
Total net revenues	$	10,280	$	10	$	11	$	10,301	$	9,177	$	44	$	86	$	9,307

	Six Months Ended July 1, 2023								Six Months Ended July 2, 2022
	(In thousands)
	HDD		PV		ASP		Total		HDD		DCP		PV		Total
Systems, upgrades and spare parts	$	19,868	$	28	$	11	$	19,907	$	10,879	$	1	$	135	$	11,015
Field service		1,936		—		—		1,936		2,684		43		10		2,737
Total net revenues	$	21,804	$	28	$	11	$	21,843	$	13,563	$	44	$	145	$	13,752

Primary Geographical Markets

	Three Months Ended				Six Months Ended
	July 1, 2023		July 2, 2022		July 1, 2023		July 2, 2022
	(In thousands)
United States	$	662	$	1,656	$	2,276	$	1,950
Asia		9,628		7,651		19,556		11,802
Europe		11		—		11		—
Total net revenues	$	10,301	$	9,307	$	21,843	$	13,752

Timing of Revenue Recognition

	Three Months Ended				Six Months Ended
	July 1, 2023		July 2, 2022		July 1, 2023		July 2, 2022
	(In thousands)
Products transferred at a point in time	$	10,301	$	9,307	$	21,843	$	13,752
Products and services transferred over time		—		—		—		—
Total net revenues	$	10,301	$	9,307	$	21,843	$	13,752

Changes in Contract Assets and Contract Liabilities

The following table reflects the changes in our contract assets, which we classify as accounts receivable, unbilled, and our contract liabilities, which we classify as deferred revenue and customer advances, for the six months ended July 1, 2023:

	July 1, 2023		December 31, 2022		Six Months Change
	(In thousands)
Contract assets:
Accounts receivable, unbilled	$	1,023	$	424	$	599
Contract liabilities:
Deferred revenue	$	310	$	2,446	$	(2,136	)
Customer advances		21,730		24,659		(2,929	)
	$	22,040	$	27,105	$	(5,065	)