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Fair Value Measurements - Fair Value of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jan. 27, 2024	Jul. 29, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,323	$ 18,335
Gross Unrealized Losses	(2)	(174)
Fair Value	2,321	18,161
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	272	7,266
Gross Unrealized Losses	0	(40)
Fair Value	272	7,226
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,051	11,069
Gross Unrealized Losses	(2)	(134)
Fair Value	$ 2,049	$ 10,935

X

- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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