Investments (Tables)

12 Months Ended

Apr. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Cash Equivalents and Available-For-Sale Marketable Securities and Balance Sheet Classification

The following table summarizes the Company’s cash equivalents and available-for-sale marketable securities (in thousands):

	As of April 30, 2021								As of April 30, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	43,401	$	—	$	—	$	43,401	$	10,260	$	—	$	—	$	10,260
Available-for-sale marketable securities:
U.S. treasury securities	57,993		5		—		57,998		11,489		11		—		11,500
Certificates of deposit	422,952		32		(6)		422,978		28,476		1		—		28,477
U.S. government agencies securities	—		—		—		—		9,995		79		—		10,074
Commercial paper	494,625		64		(13)		494,676		94,242		155		—		94,397
Corporate debt securities	2,369		—		(1)		2,368		68,246		179		—		68,425
Total cash equivalents and available-for-sale marketable securities	$	1,021,340	$	101	$	(20)	$	1,021,421	$	222,708	$	425	$	—	$	223,133

Summary of Available-For-Sale Marketable Securities by Contractual Maturity

The following table summarizes the Company’s available-for-sale marketable securities by contractual maturity (in thousands):

	As of April 30, 2021				As of April 30, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Within one year	$	977,939	$	978,020	$	212,449	$	212,873
After one year through five years	—		—		—		—
Total	$	977,939	$	978,020	$	212,449	$	212,873