Cash, Cash Equivalents and Short-Term Investments - Schedule of Short Term Investments (Details) $ in Thousands	Apr. 30, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 47,361
Gross Unrealized Gains	0
Gross Unrealized Losses	(69)
Fair Value	47,292
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,941
Gross Unrealized Gains	0
Gross Unrealized Losses	(29)
Fair Value	10,912
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	21,892
Gross Unrealized Gains	0
Gross Unrealized Losses	(35)
Fair Value	21,857
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,528
Gross Unrealized Gains	0
Gross Unrealized Losses	(5)
Fair Value	$ 14,523

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).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Paragraph 2
-Subparagraph (c)
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Amortized cost excluding accrued interest, after allowance for credit loss, 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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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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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