Credit Losses - Schedule of Fair Value and Unrealized Losses on Available for Sale Debt Securities (Detail) - USD ($) $ in Thousands	Jan. 31, 2023	Apr. 30, 2022
Commercial paper
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Less than 12 months, fair value	$ 13,567	$ 37,002
Less than 12 months, unrealized losses	78	125
12 months or longer, fair value	2,648	4,499
12 months or longer, unrealized losses	1	1
Commercial paper \| Cash and Cash Equivalent
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Cash and Cash Equivalent	0	15,489
Commercial paper \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Marketable Securities, Current	16,215	26,012
Commercial paper \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Marketable Securities, Non- Current	0	0
Corporate notes/bonds
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Less than 12 months, fair value	13,454	32,186
Less than 12 months, unrealized losses	211	446
12 months or longer, fair value	14,160	3,800
12 months or longer, unrealized losses	278	4
Corporate notes/bonds \| Cash and Cash Equivalent
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Cash and Cash Equivalent	0	0
Corporate notes/bonds \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Marketable Securities, Current	20,311	18,942
Corporate notes/bonds \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Marketable Securities, Non- Current	$ 7,303	17,044
U.S. Treasury and Agency Securities
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Less than 12 months, fair value		987
Less than 12 months, unrealized losses		8
12 months or longer, fair value		0
12 months or longer, unrealized losses		0
U.S. Treasury and Agency Securities \| Cash and Cash Equivalent
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Cash and Cash Equivalent		0
U.S. Treasury and Agency Securities \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Marketable Securities, Current		987
U.S. Treasury and Agency Securities \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Marketable Securities, Non- Current		$ 0

Fair value and unrealized losses on available for sale debt securities.

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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).

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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), classified as current.

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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), classified as noncurrent.

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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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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