Balance Sheet Information - Summary of Inventories (Details) - USD ($) $ in Thousands	Dec. 29, 2024	Dec. 31, 2023
Balance Sheet Information [Abstract]
Raw materials	$ 3,218	$ 4,775
Work-in-process	981	19
Supplies and spare parts	10,222	10,547
Finished goods	114	0
Total inventories, current	14,535	15,341
Inventory, non-current	4,747	3,293
Total inventory	$ 19,282	$ 18,634

Balance Sheet Information

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Inventory

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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