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Disaggregation of Sales, Geographic Sales and Product Sales - Net Sales by Products and Services (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jul. 01, 2022
Jun. 30, 2023
Jul. 01, 2022
Product Information [Line Items]        
Total other product sales $ (806) $ 3,179 $ 2,097 $ 7,704
Total net sales 92,306 81,101 165,834 144,301
ICLs [Member]        
Product Information [Line Items]        
Revenue from contract with customer, excluding assessed tax 93,112 77,922 163,737 136,597
Cataract IOLs [Member]        
Product Information [Line Items]        
Total other product sales 40 2,547 1,516 5,449
Other surgical products [Member]        
Product Information [Line Items]        
Total other product sales [1] $ (846) $ 632 $ 581 $ 2,255
[1] Other surgical products include delivery systems and normal recurring sales adjustments such as sales return allowances.