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Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	3 Months Ended			9 Months Ended		10 Months Ended	12 Months Ended	15 Months Ended
	Sep. 27, 2025 USD ($)	Sep. 28, 2024 USD ($)	Apr. 02, 2022	Sep. 27, 2025 USD ($) segment	Sep. 28, 2024 USD ($)	Sep. 27, 2025 USD ($)	Jan. 01, 2022 USD ($)	Apr. 02, 2022	Jul. 09, 2025 USD ($)	Dec. 28, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Number of reportable segments | segment				3
Bank guarantees, expiration period (in months)				12 months
Intangible assets	$ 270,775			$ 270,775		$ 270,775				$ 279,494
Intangible assets of amortization				200
Impairment charge	287	$ 0		287	$ 0
Revenue recognized	6,064	$ 8,897		36,861	66,036
Revenue, remaining performance obligation, amount	27,990			27,990		27,990
Proceeds from sale of property, plant, and equipment				$ 136	$ 1,320
Banker's acceptance drafts, maturity period (in months)				6 months
Banker's acceptance drafts	8,861			$ 8,861		8,861				$ 5,299
Babbini
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Intangible assets									$ 5,278
CHINA | Land and Building
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Proceeds from sale of property, plant, and equipment							$ 25,159
Down payment percentage								31.00%
Period of recognition of gain on sale and a receivable for remaining amount of sales proceeds (in years)			2 years
Amount of receivable settled by government						1,803
Nontrade receivables, current	$ 13,592			$ 13,592		$ 13,592
Certain Capital Contracts
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Lead time for for certain capital contracts (up to) (in months)				24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-09-28
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percent	78.00%			78.00%		78.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months			12 months		12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-09-28
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percent	22.00%			22.00%		22.00%
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