Credit Losses - Schedule of Fair Value and Unrealized Losses on Available for Sale Debt Securities (Detail) - USD ($) $ in Thousands	Oct. 31, 2023	Apr. 30, 2023
Commercial paper
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Less than 12 months, fair value	$ 8,259	$ 8,229
Less than 12 months, unrealized losses	5	26
12 months or longer, fair value	0	3,492
12 months or longer, unrealized losses	0	4
Commercial paper \| Cash and Cash Equivalent
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities AFS, fair value	3,889	0
Commercial paper \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, current	4,370	11,721
Commercial paper \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt 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	10,886	9,581
Less than 12 months, unrealized losses	32	123
12 months or longer, fair value	10,235	13,815
12 months or longer, unrealized losses	104	232
Corporate notes/bonds \| Cash and Cash Equivalent
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities AFS, fair value	0	0
Corporate notes/bonds \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, current	11,727	20,489
Corporate notes/bonds \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, non-current	9,394	$ 2,907
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	8,079
Less than 12 months, unrealized losses	14
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]
Debt securities AFS, fair value	4,299
U.S. Treasury and Agency Securities \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, current	0
U.S. Treasury and Agency Securities \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, non-current	$ 3,780

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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 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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Amount of accumulated unrealized loss on 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 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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