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Fair Value Measurements - Fair Value of Available-for-Sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jan. 28, 2023	Jul. 30, 2022
Debt Securities, Available-for-sale [Line Items]
One Year or Less	$ 82,620	$ 82,049
Over One Year Through Five Years	2,288	17,713
Over Five Years	0	0
Total	84,908	99,762
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
One Year or Less	42,487	35,473
Over One Year Through Five Years	261	6,787
Over Five Years	0	0
Total	42,748	42,260
Commercial paper
Debt Securities, Available-for-sale [Line Items]
One Year or Less	0	2,985
Over One Year Through Five Years	0	0
Over Five Years	0	0
Total	0	2,985
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
One Year or Less	40,133	43,591
Over One Year Through Five Years	2,027	10,926
Over Five Years	0	0
Total	$ 42,160	$ 54,517

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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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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