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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Components of Income Before Income Taxes

The components of income before income taxes were as follows (in thousands):

			Fiscal Year Ended
			December 31, 2022						December 25, 2021						December 26, 2020
United States			$	30,047					$	74,298					$	72,950
Foreign			27,823						24,202						12,225
			$	57,870					$	98,500					$	85,175

Schedule of Components of Provision for Income Taxes

The components of the provision for income taxes are as follows (in thousands):

			Fiscal Year Ended
			December 31, 2022						December 25, 2021						December 26, 2020
Current provision:
Federal			$	4,330					$	2,334					$	1,799
State			520						712						1,194
Foreign			8,625						7,661						4,278
			13,475						10,707						7,271
Deferred provision (benefit):
Federal			(5,886)						4,651						1,472
State			118						522						(267)
Foreign			(575)						(1,304)						(1,824)
			(6,343)						3,869						(619)
Total provision for income taxes			$	7,132					$	14,576					$	6,652

Schedule of Effective Income Tax Rate Reconciliation

The following is a reconciliation of the difference between income taxes computed by applying the federal statutory rate of 21% and the provision from income taxes (in thousands):

			Fiscal Year Ended
			December 31, 2022						December 25, 2021						December 26, 2020
U.S. statutory federal tax rate			$	12,153					$	20,685					$	17,887
State taxes and credits, net of federal benefit			16						811						663
Stock-based compensation			(2,772)						(6,118)						(4,962)
Research and development credits			(8,264)						(7,153)						(6,576)
Foreign taxes at rates different than the U.S.			2,404						2,286						415
Other permanent differences			1,964						2,043						400
Global intangible low-taxed income			7						—						—
Foreign derived intangible income			(5,160)						(2,486)						(3,668)
Change in valuation allowance			2,597						2,231						1,862
Tax contingencies, net of reversals			3,124						2,812						2,712
Other			1,063						(535)						(2,081)
Total			$	7,132					$	14,576					$	6,652

Schedule of Deferred Tax Assets and Liabilities

Significant deferred tax assets and liabilities consisted of the following (in thousands):

			As of
			December 31, 2022						December 25, 2021
Tax credits			$	33,025					$	41,650
Inventory reserve			14,269						13,691
Other reserves and accruals			6,527						8,523
Non-statutory stock options			3,180						2,837
Lease liability			6,024						6,717
Research and development expenditures capitalization			36,821						19,553
Net operating loss carryforwards			18,173						18,395
Gross deferred tax assets			118,019						111,366
Valuation allowance			(43,295)						(40,698)
Total deferred tax assets			74,724						70,668
Right-of-use assets			(5,219)						(5,910)
Acquired intangibles and fixed assets			(4,342)						(6,163)
Unrealized investment gains			(103)						(105)
Tax on undistributed earnings			(146)						(118)
Total deferred tax liabilities			(9,810)						(12,296)
Net deferred tax assets			$	64,914					$	58,372

Summary of Tax Credit Carryforwards

Tax credits and carryforwards available to us at December 31, 2022 consisted of the following (in thousands):

						Amount						Latest Expiration Date
Federal research and development tax credit						$	26,424					2034-2042
Foreign tax credit carryforwards						995						2023-2027
California research credits						52,131						Indefinite
State net operating loss carryforwards						249,087						2025-Indefinite
Singapore net operating loss carryforwards						5,724						Indefinite

Schedule of Unrecognized Tax Benefits

The following table reflects changes in the unrecognized tax benefits (in thousands):

			Fiscal Year Ended
			December 31, 2022						December 25, 2021						December 26, 2020
Unrecognized tax benefit, beginning balance			$	35,745					$	32,497					$	28,800
Additions based on tax positions related to the current year			3,868						3,201						3,072
Additions based on tax positions from prior years			795						124						702
Reductions for tax positions of prior years			—						—						—
Reductions due to lapse of the applicable statute of limitations			(310)						(77)						(77)
Unrecognized tax benefit, ending balance			$	40,098					$	35,745					$	32,497
Interest and penalties recognized as a component of provision for income taxes			$	30					$	40					$	50
Interest and penalties accrued at period end			85						188						204

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