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Fair Value Measurements - Fair Value of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jan. 28, 2023	Jul. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 86,065	$ 101,674
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,157)	(1,912)
Fair Value	84,908	99,762
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	43,311	43,163
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(563)	(903)
Fair Value	42,748	42,260
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	0	2,985
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	0	2,985
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	42,754	55,526
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(594)	(1,009)
Fair Value	$ 42,160	$ 54,517

X

- Definition

Amount, before tax, of unrealized gain 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).

+ References

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+ References

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-Publisher FASB
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Amount excluding accrued interest, of 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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