Segment and Geographic Information - Schedule of Net Revenue by Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 27, 2026	Sep. 28, 2025	Sep. 27, 2026	Sep. 28, 2025
Segment Reporting [Line Items]
Total revenue	$ 149,177	$ 139,529	$ 455,496	$ 388,000
United States
Segment Reporting [Line Items]
Total revenue	88,243	81,270	256,791	228,630
Spain
Segment Reporting [Line Items]
Total revenue	32,818	32,195	110,386	89,015
Sweden
Segment Reporting [Line Items]
Total revenue	19,706	13,614	63,155	36,152
Other countries
Segment Reporting [Line Items]
Total revenue	$ 8,410	$ 12,450	$ 25,164	$ 34,203

Amount, including 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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+ Details

- 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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+ Details