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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 27, 2025

Accounting Policies [Abstract]

Schedule of Allowance for Doubtful Accounts

Activity related to our allowance for credit losses was as follows (in thousands):

			Fiscal Year Ended
			December 27, 2025						December 28, 2024						December 30, 2023
Balance at beginning of year			$	4					$	501					$	168
Charges to costs and expenses			38						20						333
Write-offs			(13)						(517)						—
Balance at end of year			$	29					$	4					$	501

Schedules of Concentration of Risk, by Customer

The following customers represented 10% or more of our revenues:

			Fiscal Year Ended
			December 27, 2025						December 28, 2024						December 30, 2023
SK hynix Inc.			22.9		%				18.9		%				*
Intel Corporation			*						14.6		%				17.1		%

* Less than 10% of revenues.

Schedule of Product Warranty Liability Reconciliation

A reconciliation of the changes in our warranty liability is as follows (in thousands):

			Fiscal Year Ended
			December 27, 2025						December 28, 2024						December 30, 2023
Balance at beginning of year			$	3,558					$	3,177					$	4,199
Accruals			5,149						8,580						7,771
Settlements			(6,204)						(8,199)						(8,687)
Reduction - FRT divestiture			—						—						(106)
Balance at end of year			$	2,503					$	3,558					$	3,177

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table reconciles the shares used in calculating basic net income per share and diluted net income per share (in thousands):

			Fiscal Year Ended
			December 27, 2025						December 28, 2024						December 30, 2023
Weighted-average shares used in computing basic net income per share			77,348						77,340						77,370
Add potentially dilutive securities			965						1,097						789
Weighted-average shares used in computing basic and diluted net income per share			78,313						78,437						78,159

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive loss (“AOCL”) includes the following items, the impact of which has been excluded from earnings and reflected as components of stockholders' equity as shown below (in thousands):

			December 27, 2025						December 28, 2024
Unrealized gains (losses) on available-for-sale marketable securities and other investments			$	110					$	(295)
Translation adjustments			(5,060)						(11,429)
Unrealized gains on derivative instruments			1,422						884
Accumulated other comprehensive loss			$	(3,528)					$	(10,840)

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