Working capital.

No definition available.

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- Definition

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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Amount of accumulated undistributed earnings (deficit).

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2025 USD ($)	Sep. 29, 2024 USD ($)	Sep. 28, 2025 USD ($) segment	Sep. 29, 2024 USD ($)	Dec. 29, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Working capital	$ 528,100		$ 528,100
Accumulated deficit	942,837		$ 942,837		$ 821,086
Number of operating segments \| segment			1
Revenue	7,990	$ 4,317	$ 20,556	$ 13,357
Effective tax rate (as a percent)			1.17%	1.36%
Product
Disaggregation of Revenue [Line Items]
Revenue	$ 8,000	$ 4,300	$ 20,600	$ 13,400
Product \| KOREA, REPUBLIC OF \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (as a percent)	69.00%	42.00%	64.00%	41.00%