Revenue (Tables)

6 Months Ended

Jul. 03, 2021

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 3, 2021 and June 27, 2020 along with the reportable segment for each category.

Major Products and Service Lines

TFE	Three Months Ended July 3, 2021										Three Months Ended June 27, 2020
	(In thousands)
	HDD		DCP		PV		ASP		Total		HDD		PV		Total
Systems, upgrades and spare parts	$	3,955	$	3	$	47	$	—	$	4,005	$	15,226	$	61	$	15,287
Field service		1,364		—		—		—		1,364		1,306		2		1,308
Total TFE net revenues	$	5,319	$	3	$	47	$	—	$	5,369	$	16,532	$	63	$	16,595

	Six Months Ended July 3, 2021										Six Months Ended June 27, 2020
	(In thousands)
	HDD		DCP		PV		ASP		Total		HDD		PV		Total
Systems, upgrades and spare parts	$	7,539	$	3	$	158	$	3,850	$	11,550	$	21,587	$	269	$	21,856
Field service		3,001		14		42		—		3,057		2,699		2		2,701
Total TFE net revenues	$	10,540	$	17	$	200	$	3,850	$	14,607	$	24,286	$	271	$	24,557

	Three Months Ended				Six Months Ended
Photonics	July 3, 2021		June 27, 2020		July 3, 2021		June 27, 2020
	(In thousands)
Products:
Military products	$	4,958	$	5,446	$	8,209	$	10,811
Commercial products		50		39		178		118
Repair and other services		274		645		716		1,075
Total Photonics product net revenues		5,282		6,130		9,103		12,004
Technology development:
Firm Fixed Price (“FFP”)		1,543		5,462		3,348		9,892
Cost Plus Fixed Fee (“CPFF”)		1,619		655		2,996		1,229
Time and materials		—		—		—		—
Total technology development net revenues		3,162		6,117		6,344		11,121
Total Photonics net revenues	$	8,444	$	12,247	$	15,447	$	23,125

Primary Geographical Markets

	Three Months Ended						Three Months Ended
	July 3, 2021						June 27, 2020
	(In thousands)
	TFE		Photonics		Total		TFE		Photonics		Total
United States	$	2,121	$	8,371	$	10,492	$	313	$	12,125	$	12,438
Asia		3,248		—		3,248		16,282		—		16,282
Europe		—		73		73		—		122		122
Total net revenues	$	5,369	$	8,444	$	13,813	$	16,595	$	12,247	$	28,842
	Six Months Ended						Six Months Ended
	July 3, 2021						June 27, 2020
	(In thousands)
	TFE		Photonics		Total		TFE		Photonics		Total
United States	$	2,488	$	15,331	$	17,819	$	832	$	22,981	$	23,813
Asia		8,269		—		8,269		23,725		—		23,725
Europe		3,850		116		3,966		—		144		144
Total net revenues	$	14,607	$	15,447	$	30,054	$	24,557	$	23,125	$	47,682

Timing of Revenue Recognition

	Three Months Ended						Three Months Ended
	July 3, 2021						June 27, 2020
	(In thousands)
	TFE		Photonics		Total		TFE		Photonics		Total
Products transferred at a point in time	$	5,369	$	274	$	5,643	$	16,595	$	645	$	17,240
Products and services transferred over time		—		8,170		8,170		—		11,602		11,602
	$	5,369	$	8,444	$	13,813	$	16,595	$	12,247	$	28,842
	Six Months Ended						Six Months Ended
	July 3, 2021						June 27, 2020
	(In thousands)
	TFE		Photonics		Total		TFE		Photonics		Total
Products transferred at a point in time	$	14,607	$	645	$	15,252	$	24,557	$	1,075	$	25,632
Products and services transferred over time		—		14,802		14,802		—		22,050		22,050
	$	14,607	$	15,447	$	30,054	$	24,557	$	23,125	$	47,682

The following table reflects the changes in our contract assets, which we classify as accounts receivable, unbilled or retainage, and our contract liabilities, which we classify as deferred revenue and customer advances, for the six months ended July 3, 2021:

Changes in Contract Assets and Contract Liabilities

	July 3, 2021		January 2, 2021		Six Months Change
	(In thousands)
TFE:
Contract assets:
Accounts receivable, unbilled	$	—	$	369	$	(369	)
Contract liabilities:
Deferred revenue	$	195	$	482	$	(287	)
Customer advances		1		33		(32	)
	$	196	$	515	$	(319	)
Photonics:
Contract assets:
Accounts receivable, unbilled	$	1,410	$	5,439	$	(4,029	)
Retainage		127		126		1
	$	1,537	$	5,565	$	(4,028	)
Contract liabilities:
Deferred revenue	$	275	$	779	$	(504	)