Disaggregation of Revenues, Geographic Sales and Product Sales - Additional Information (Details)	12 Months Ended
	Jan. 02, 2026 USD ($) Segment	Dec. 27, 2024 USD ($) Country	Dec. 29, 2023 USD ($)	Dec. 30, 2022 USD ($)
Geographic and Product Data [Line Items]
Number of countries in which Company operates | Country		85
Number of operating segments | Segment	1
Net sales	$ 239,442,000	$ 313,901,000	$ 322,415,000	$ 239,442,000
Consignment Sales [Member]
Geographic and Product Data [Line Items]
Net sales	60,450,000	$ 20,328,000	$ 21,252,000
China [Member] | Consignment Sales [Member]
Geographic and Product Data [Line Items]
Net sales	$ 43,534,000
Sales Revenue, Net | Geographic Concentration Risk [Member] | Other than China and Japan [Member] | Maximum
Geographic and Product Data [Line Items]
Concentration risk, percentage	10.00%	10.00%
Sales Revenue, Net | Product Concentration Risk [Member] | Ophthalmic Surgical Product [Member]
Geographic and Product Data [Line Items]
Concentration risk, percentage	100.00%