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Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 28, 2024 USD ($) Customer | Sep. 30, 2023 USD ($) Customer | Sep. 28, 2024 USD ($) Customer | Sep. 30, 2023 USD ($) Customer | Dec. 30, 2023 Customer
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Service contract warranty period |  |  | 1 year |  |
Service contract, period to determine nature of sale |  |  | 60 days |  |
Arrangement fee |  |  | $ 200 |  |
Fair value of distribution right |  |  | 14,800 |  |
Amortization cost | $ 21 | $ 62 | 21 | $ 62 |
Impairments expenses | 0 | 0 | 0 | 0 |
Deferred revenue recognized |  |  | 1,900 | 1,300 |
Non-current portion of deferred revenue pertains to exclusivity fee deferred revenue | 8,600 |  | 8,600 |  |
Current portion of deferred revenue pertains to exclusivity fee deferred revenue | 1,500 |  | $ 1,500 |  |
Products warranty period |  |  | 2 years |  |
Capitalized implementation costs |  | 1,100 |  | 1,100 |
Capitalized implementation costs amortization period |  |  |  |  | 5 years
Amortization expense |  | 12 | $ 200 |  |
Prepaid Expenses and Other Current Assets and Other Long Term Assets |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Deferred costs incurred | 600 |  | 600 |  |
Revenue, Total |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Amortization cost | 19 | 57 | 19 | 57 |
Impairments expenses | $ 0 | $ 0 | $ 0 | $ 0 |
Revenue, Total | Minimum [Member] |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Amortization period | 2 years |  | 2 years |  |
Revenue, Total | Maximum [Member] |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Amortization period | 3 years |  | 3 years |  |
Revenue, Total | Prepaid Expenses and Other Current Assets and Other Long Term Assets |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Deferred costs incurred | $ 42 |  | $ 42 |  |
Revenue, Total | Topcon [Member] | Customer Concentration Risk |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of customers | Customer | 1 | 1 | 1 | 1 |
Accounts Receivable | Topcon [Member] | Credit Concentration Risk |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of customers | Customer |  |  | 1 |  | 1
Percentage of accounts receivable accounted |  |  | 23.00% |  | 30.00%
Accounts Receivable | Topcon [Member] | Credit Concentration Risk | One Customer | Minimum [Member] |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Customer and supplier accounted percentage of total revenues, accounts receivable and purchases |  |  | 10.00% |  | 10.00%
Revenue, Total | Topcon [Member] | Customer Concentration Risk |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Percentage of accounts receivable accounted | 33.00% | 34.00% | 33.00% | 29.00% |
Revenue, Total | Topcon [Member] | Customer Concentration Risk | One Customer | Minimum [Member] |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Customer and supplier accounted percentage of total revenues, accounts receivable and purchases | 10.00% | 10.00% | 10.00% | 10.00% |
Distribution Rights [Member] |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Revenue Recognized | $ 400 | $ 400 | $ 1,100 | $ 1,100 |
Royalty Agreements |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of customers | Customer |  |  | 2 |  |

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