Fair Value Measurements - Summary of Available-for-Sale Investments within Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands	May 31, 2022	Aug. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 299,909	$ 191,917
Unrealized Gains	169	64
Estimated Fair Value	300,078	191,981
Cash and Cash Equivalents \| Money Market Funds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	44,575
Estimated Fair Value	44,575
U S Government Agency Securities \| Cash and Cash Equivalents
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	31,992
Estimated Fair Value	31,992
U S Government Agency Securities \| Short Term Investments
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	223,342	191,917
Unrealized Gains	169	64
Estimated Fair Value	$ 223,511	$ 191,981

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).

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-Publisher FASB
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-Topic 320
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-Section 50
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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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