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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 25, 2021

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 25, 2021						December 26, 2020						December 28, 2019
Balance at beginning of year			$	248					$	222					$	185
Charges (reversals) to costs and expenses			(53)						26						37
Balance at end of year			$	195					$	248					$	222

Schedules of Concentration of Risk, by Customer

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

			Fiscal Year Ended
			December 25, 2021						December 26, 2020						December 28, 2019
Intel Corporation			20.4		%				31.5		%				25.3		%
Samsung Electronics Co., LTD.			11.4		%				*						11.5		%

* 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 25, 2021						December 26, 2020						December 28, 2019
Balance at beginning of year			$	3,918					$	1,942					$	2,102
Accruals			5,759						5,727						3,881
Settlements			(6,872)						(3,751)						(4,041)
Balance at end of year			$	2,805					$	3,918					$	1,942

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 25, 2021						December 26, 2020						December 28, 2019
Weighted-average shares used in computing basic net income per share			77,787						76,681						74,994
Add potentially dilutive securities			1,346						2,320						2,292
Weighted-average shares used in computing basic and diluted net income per share			79,133						79,001						77,286

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) (“OCI”) 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 25, 2021						December 26, 2020
Unrealized losses on available-for-sale marketable securities			$	(724)					$	(126)
Translation adjustments and other			(811)						5,184
Unrealized gains on derivative instruments			86						828
Accumulated other comprehensive income (loss)			$	(1,449)					$	5,886

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