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Segments and Geographic Information - Revenue by Market (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Revenue from External Customers [Line Items]
Revenues	$ 784,993	$ 763,599	$ 663,102
Foundry & Logic
Revenue from External Customers [Line Items]
Revenues	369,897	381,182	363,539
DRAM
Revenue from External Customers [Line Items]
Revenues	247,397	227,422	113,779
Flash
Revenue from External Customers [Line Items]
Revenues	20,604	$ 17,356	20,585
Systems
Revenue from External Customers [Line Items]
Revenues	$ 147,095		$ 165,199

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