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Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 28, 2025 USD ($) Customer | Jun. 29, 2024 USD ($) Customer | Jul. 01, 2023 USD ($) | Jun. 28, 2025 USD ($) Segment Customer | Jun. 29, 2024 USD ($) Customer | Jul. 01, 2023 USD ($) | Dec. 28, 2024 Customer
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of operating segments | Segment |  |  |  | 1 |  |  |
Service contract warranty period |  |  |  | 1 year |  |  |
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] |  |  |  | srt:ChiefExecutiveOfficerMember |  |  |
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description |  |  |  | The CODM allocates resources and evaluates the performance of the Company at the consolidated level using information about its revenues, gross profit, income from operations, and other key financial data. |  |  |
Service contract, period to determine nature of sale |  |  |  | 60 days |  |  |
Arrangement fee |  |  |  | $ 200 |  |  |
Fair value of distribution right |  |  |  | 14,800 |  |  |
Amortization cost | $ 20 | $ 41 |  | 20 | $ 41 |  |
Impairments expenses | 0 | 0 |  | 0 | 0 |  |
Deferred revenue recognized |  |  |  | 1,200 | 1,400 |  |
Non-current portion of deferred revenue pertains to exclusivity fee deferred revenue | 7,500 |  |  | 7,500 |  |  |
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 |  |  | 5 years |  |  |
Amortization expense |  |  |  | $ 113 | 113 |  |
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 | 4 | $ 19 |  | 23 | $ 38 |  |
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 | 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 |  |  |  | 29.00% |  |  | 29.00%
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 | 32.00% | 38.00% |  | 32.00% | 35.00% |  |
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 | $ 300 | $ 400 |  | $ 700 | $ 700 |  |
Royalty Agreements |  |  |  |  |  |  |
Disclosure Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of customers | Customer |  |  |  | 3 |  |  |

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