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Credit Losses - Schedule of Fair Value and Unrealized Losses on Available for Sale Debt Securities (Details) - USD ($) $ in Thousands | Jan. 31, 2025 | Apr. 30, 2024
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Commercial paper |  |
Fair Value And Unrealized Losses On Available For Sale Debt Securities [Line Items] |  |
Less than 12 months, fair value | $ 4,647 | $ 11,040
Less than 12 months, unrealized losses | 3 | 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 | 4,647 | 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 | 9,366 | 11,022
Less than 12 months, unrealized losses | 32 | 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 | 2,551 | 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 | 6,815 | 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 | 1,499 | 4,346
Less than 12 months, unrealized losses | 1 | 9
12 months or longer, fair value | 0 | 0
12 months or longer, unrealized losses | 0 | 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 | 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 | 1,000 | 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 | $ 499 | $ 1,905

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