Credit Losses - Schedule of Fair Value and Unrealized Losses on Available for Sale Debt Securities (Detail) - USD ($) $ in Thousands	Apr. 30, 2024	Apr. 30, 2023
Commercial paper
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Less than 12 months, fair value	$ 11,040	$ 8,229
Less than 12 months, unrealized losses	19	26
12 months or longer, fair value	0	3,492
12 months or longer, unrealized losses	0	4
Commercial paper \| Cash and Cash Equivalents
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities AFS, fair value	3,932	0
Commercial paper \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, current	7,108	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	11,022	9,581
Less than 12 months, unrealized losses	26	123
12 months or longer, fair value	1,999	13,815
12 months or longer, unrealized losses	1	232
Corporate notes/bonds \| Cash and Cash Equivalents
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	9,050	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	3,971	$ 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	4,346
Less than 12 months, unrealized losses	9
12 months or longer, fair value	0
12 months or longer, unrealized losses	0
U.S. Treasury and Agency Securities \| Cash and Cash Equivalents
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities AFS, fair value	0
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	2,441
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	$ 1,905

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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), 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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