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Credit Losses | 12 Months Ended
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Apr. 30, 2024
Credit Loss [Abstract] |
Credit Losses | Credit Losses The activity in the allowance for credit losses on the Company's trade receivables is as follows:
| (in thousands)
Balance at May 1, 2021 | $ | 29,324 |
Provision for credit losses | 21,552 |
Write-offs | (14,052) |
Recoveries of amounts previously written off | 702 |
Foreign currency translation | (1,142) |
Balance at April 30, 2022 | 36,384 |
Provision for credit losses | 22,493 |
Write-offs | (15,806) |
Recoveries of amounts previously written off | 585 |
Foreign currency translation | 721 |
Balance at April 30, 2023 | 44,377 |
Provision for credit losses | 20,715 |
Write-offs | (20,856) |
Recoveries of amounts previously written off | 454 |
Foreign currency translation | (498) |
Balance at April 30, 2024 | $ | 44,192 |
The fair value and unrealized losses on available for sale debt securities, aggregated by investment category and the length of time the security has been in an unrealized loss position as of April 30, 2024 and 2023, are as follows:
| Less Than 12 Months |  | 12 Months or longer |  | Balance Sheet Classification
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Cash and Cash Equivalents |  | Marketable Securities, Current |  | Marketable Securities, Non-Current
| (in thousands)
Balance at April 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper | $ | 8,229 |  |  | $ | 26 |  |  | $ | 3,492 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 11,721 |  |  | $ | — |
Corporate notes/bonds | $ | 9,581 |  |  | $ | 123 |  |  | $ | 13,815 |  |  | $ | 232 |  |  | $ | — |  |  | $ | 20,489 |  |  | $ | 2,907 |
Balance at April 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper | $ | 11,040 |  |  | $ | 19 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,932 |  |  | $ | 7,108 |  |  | $ | — |
Corporate notes/bonds | $ | 11,022 |  |  | $ | 26 |  |  | $ | 1,999 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 9,050 |  |  | $ | 3,971 |
U.S. Treasury and Agency Securities | $ | 4,346 |  |  | $ | 9 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,441 |  |  | $ | 1,905 |
The Company only purchases high grade bonds that have a maturity from the date of purchase of no more than two years. The Company monitors the creditworthiness of its investments on a quarterly basis. The Company does not intend to sell the investments and does not believe it will be required to sell the investments before the investments mature and therefore recover the amortized cost basis.

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- Definition The entire disclosure for allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -Publisher FASB -URI https://asc.fasb.org//310/tableOfContent + Details
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- References No definition available. + Details
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