Merger termination fee.

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Number of leased properties looking for subleases.

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Organization And Description Of Business And Accounting Policies [Line Items]

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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- Definition

Per share price of saleable stock paid or offered to be paid by acquirer in business combination.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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Amount of loss from impairment of right-of-use asset from operating lease.

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Professional and contract service expense includes cost reimbursements for support services related to contracted projects, outsourced management, technical and staff support.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Basis of Presentation and Significant Accounting Policies - Additional Information (Details)		3 Months Ended	6 Months Ended	9 Months Ended
	Aug. 04, 2025 USD ($) $ / shares	Sep. 26, 2025 USD ($)	Jun. 27, 2025	Sep. 26, 2025 USD ($) Property
Organization And Description Of Business And Accounting Policies [Line Items]
Recognized costs of severance and reduction in workforce		$ 18,000		$ 12,471,000
Consulting expenses		8,000		874,000
Impairment on real property right-of-use assets		0		$ 4,083,000
Number of leased properties looking for subleases \| Property				2
Restructuring, impairment and related charges		26,000		$ 27,938,000
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 assesses performance by comparing actual results to forecasts and decides how to allocate resources, i.e., headcount and compensation, based on consolidated net loss.
Leasehold Improvements
Organization And Description Of Business And Accounting Policies [Line Items]
Recognized cost		0		$ 7,759,000
Internally Developed Software
Organization And Description Of Business And Accounting Policies [Line Items]
Impairment of internally developed software		$ 0		$ 2,751,000
STAAR Surgical Company
Organization And Description Of Business And Accounting Policies [Line Items]
Merger termination fee	$ 72,400,000
Alcon Research, LLC
Organization And Description Of Business And Accounting Policies [Line Items]
Business acquisition, share cancellation and conversion price in cash \| $ / shares	$ 28
Merger termination fee	$ 43,400,000
Maximum \| Consolidated Accounts Payable \| Vendor Concentration Risk
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration risk, aggregate of percentage		10.00%	10.00%