Credit Losses - Schedule of Fair Value and Unrealized Losses on Available for Sale Debt Securities (Detail) - USD ($) $ in Thousands	Oct. 31, 2024	Apr. 30, 2024
Commercial paper
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Less than 12 months, fair value	$ 3,460	$ 11,040
Less than 12 months, unrealized losses	4	19
12 months or longer, fair value	0	0
12 months or longer, unrealized losses	0	0
Commercial paper \| Cash and Cash Equivalent
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities AFS, fair value	0	3,932
Commercial paper \| Marketable Securities, Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, current	3,460	7,108
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	5,473	11,022
Less than 12 months, unrealized losses	28	26
12 months or longer, fair value	0	1,999
12 months or longer, unrealized losses	0	1
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	942	9,050
Corporate notes/bonds \| Marketable Securities, Non- Current
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items]
Debt securities, non-current	$ 4,531	3,971
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 Equivalent
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

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

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