Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Apr. 30, 2023 USD ($) segment Customer $ / shares shares	Apr. 30, 2022 USD ($) Customer	Apr. 30, 2021 USD ($) Customer	Apr. 30, 2020 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Foreign currency transaction (gain) loss	$ 1,386,000	$ (1,984,000)	$ 9,507,000
Allowance for doubtful accounts	3,409,000	2,700,000	2,344,000	$ 1,247,000
Unbilled accounts receivable	$ 2,200,000	9,200,000
Number of operating segments | segment	1
Number of reportable segments | segment	1
Impairment of goodwill	$ 0	0	0
Estimated amortization period of sales commissions	5 years
Advertising costs	$ 22,400,000	19,700,000	16,700,000
Stock-based compensation expense, net of amounts capitalized	204,039,000	141,194,000	93,680,000
Short-term deferred revenue, adjustment	(34,248,000)	(33,518,000)
Reduction in accumulated deficit	(398,897,000)	(415,433,000)	(450,831,000)	(413,647,000)
long-term deferred revenue, adjustment	528,704,000	431,776,000
Capitalized Computer Software, Additions	0	5,100,000
Capitalized Computer Software, Amortization	$ 1,200,000	200,000	0
Treasury stock (in shares) | shares	35,937
Average treasury stock repurchase price ( in $ / shares) | $ / shares	$ 10.30
Customer relationships
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets	4 years
Trade names
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets	4 years
Operating Right-Of-Use Assets
Summary Of Significant Accounting Policies [Line Items]
Impairment charges	$ 5,100,000
Furniture, Equipment, And Leasehold Improvements
Summary Of Significant Accounting Policies [Line Items]
Impairment charges	1,100,000
Other Income (Expense)
Summary Of Significant Accounting Policies [Line Items]
Foreign currency transaction (gain) loss	(400,000)	(3,600,000)	7,700,000
Accumulated Deficit
Summary Of Significant Accounting Policies [Line Items]
Reduction in accumulated deficit	$ 1,053,327,000	817,166,000	613,318,000	484,251,000
Cumulative Effect, Period of Adoption, Adjustment
Summary Of Significant Accounting Policies [Line Items]
Allowance for doubtful accounts		0	$ 0	(367,000)
Reduction in accumulated deficit		$ (1,266,000)		(367,000)
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit
Summary Of Significant Accounting Policies [Line Items]
Reduction in accumulated deficit				$ (367,000)
Minimum
Summary Of Significant Accounting Policies [Line Items]
Percentage of likelihood that a tax benefit will be sustained	50.00%
Minimum | Developed technology
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets	4 years
Maximum | Developed technology
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets	5 years
Customer Concentration Risk | Net Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer	1	0	0
Customer Concentration Risk | Net Accounts Receivable | Customer One
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	12.00%
Customer Concentration Risk | Revenue
Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer	0	0	0