Related Party - Topcon - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021	Jan. 01, 2022
Related Party Transaction [Line Items]
Total revenues	$ 13,755	$ 13,426	$ 13,426	$ 27,142	$ 25,385
Receivable from related party	2,429			2,429		$ 3,106	[1]
Payable to related party	$ 180			$ 180		627	[1]
Topcon America Corporation [Member]
Related Party Transaction [Line Items]
Ownership percentage	10.20%			10.20%
Total revenues	$ 3,600		2,200	$ 7,600	3,300
Purchases from related party	200			600
Receivable from related party	2,400			2,400		3,100
Payable to related party	200			200		$ 600
Distribution Rights [Member]
Related Party Transaction [Line Items]
Revenue Recognized	300			600
Distribution Rights [Member] | Topcon America Corporation [Member]
Related Party Transaction [Line Items]
Revenue Recognized	$ 300			$ 600
Distribution Fees [Member] | Topcon America Corporation [Member]
Related Party Transaction [Line Items]
Revenue Recognized			$ 100		$ 100

[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended January 1, 2022.