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Balance Sheet Components (Tables)

12 Months Ended

Dec. 27, 2025

Balance Sheet Components [Abstract]

Schedule of Marketable Securities

Marketable securities consisted of the following (in thousands):

December 27, 2025			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. treasuries			$	76,397					$	229					$	—					$	76,626
Commercial paper			7,414						1						(1)						7,414
Corporate bonds			74,612						296						(11)						74,897
U.S. agency securities			12,887						24						(6)						12,905
			$	171,310					$	550					$	(18)					$	171,842

December 28, 2024			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. treasuries			$	71,188					$	139					$	(75)					$	71,252
Commercial paper			998						—						—						998
Corporate bonds			83,091						211						(126)						83,176
U.S. agency securities			13,881						15						(27)						13,869
			$	169,158					$	365					$	(228)					$	169,295

Contractual Maturity of Marketable Securities

The contractual maturities of marketable securities were as follows (in thousands):

			December 27, 2025												December 28, 2024
			Amortized Cost						Fair Value						Amortized Cost						Fair Value
Due in one year or less			$	105,351					$	105,654					$	82,492					$	82,587
Due after one year to five years			65,959						66,188						86,666						86,708
			$	171,310					$	171,842					$	169,158					$	169,295

Schedule of Net Inventory

Inventories consisted of the following (in thousands):

			December 27, 2025						December 28, 2024
Raw materials			$	47,969					$	45,547
Work-in-progress			42,812						38,366
Finished goods			20,103						17,763
			$	110,884					$	101,676

Schedule of Property, Plant and Equipment

Property, plant and equipment, net consisted of the following (in thousands):

			December 27, 2025						December 28, 2024
Land			$	35,274					$	17,124
Building and building improvements			46,502						46,578
Machinery and equipment			317,024						307,201
Computer equipment and software			45,135						47,344
Furniture and fixtures			7,043						7,430
Leasehold improvements			104,262						101,374
Sub-total			555,240						527,051
Less: Accumulated depreciation and amortization			(390,323)						(379,968)
Net property, plant and equipment			164,917						147,083
Construction-in-progress			94,151						63,147
Total			$	259,068					$	210,230

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

			December 27, 2025						December 28, 2024
Accrued compensation and benefits			$	31,495					$	26,077
Accrued income and other taxes			3,098						2,969
Accrued employee stock purchase plan contributions withheld			5,190						6,034
Accrued warranty			2,503						3,558
Other accrued expenses			5,249						5,104
			$	47,535					$	43,742

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