Related Party - Topcon - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021	Jan. 01, 2022
Related Party Transaction [Line Items]
Total revenues	$ 14,635	$ 13,264		$ 41,777	$ 38,649
Receivable from related party	3,587			3,587		$ 3,106	[1]
Payable to related party	$ 101			$ 101		627	[1]
Topcon [Member]
Related Party Transaction [Line Items]
Ownership percentage	10.10%			10.10%
Topcon America Corporation [Member]
Related Party Transaction [Line Items]
Total revenues	$ 4,500		$ 3,000	$ 12,100	6,300
Purchases from related party	300			900
Receivable from related party	3,600			3,600		3,100
Payable to related party	100			100		$ 600
Distribution Rights [Member]
Related Party Transaction [Line Items]
Revenue Recognized	400			$ 1,000
Distribution Rights [Member] | Topcon America Corporation [Member]
Related Party Transaction [Line Items]
Revenue Recognized	$ 400
Distribution Fees [Member] | Topcon America Corporation [Member]
Related Party Transaction [Line Items]
Revenue Recognized			$ 200		$ 300

[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.