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Cash and Marketable Securities (Tables) | 9 Months Ended
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Feb. 28, 2022
Cash and Cash Equivalents [Abstract] |
Schedule Of Classification And Maturities Of Marketable Securities | Marketable Securities as of February 28, 2022 and May 31, 2021 are listed below by classification and remaining maturities.
|  |  |  |  | February 28, |  |  | May 31, |
(in thousands) |  | Maturity |  |  | 2022 |  |  | 2021 |
Commercial Paper & Corporate Bonds |  |  | 0 - 90 days |  |  |  | 94,740 |  |  |  | 106,631 |
|  |  | 91 - 180 days |  |  |  | 85,373 |  |  |  | 78,727 |
|  |  | 181 days - 1 year |  |  |  | 57,310 |  |  |  | 87,590 |
|  |  | 1 - 2 years |  |  |  | 97,887 |  |  |  | 26,752 |
Certificates of Deposit |  |  | 0 - 90 days |  |  |  | 250 |  |  |  | 3,262 |
|  |  | 91 - 180 days |  |  |  | — |  |  |  | 1,260 |
|  |  | 181 days - 1 year |  |  |  | — |  |  |  | 1,263 |
|  |  | 1 - 2 years |  |  |  | — |  |  |  | — |
Total Marketable Securities |  |  |  |  |  | $ | 335,560 |  |  | $ | 305,485 |
Summary of components of marketable securities | The components of marketable securities at February 28, 2022 are as follows:
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  |  |
(in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Commercial Paper & Corporate Bonds |  |  | 337,159 |  |  |  | 7 |  |  |  | (1,856 | ) |  |  | 335,310 |
Certificates of Deposit |  |  | 250 |  |  |  | — |  |  |  | — |  |  |  | 250 |
Total Marketable Securities |  | $ | 337,409 |  |  | $ | 7 |  |  | $ | (1,856 | ) |  | $ | 335,560 |
The components of marketable securities at May 31, 2021 are as follows:
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  |  |
(in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Commercial Paper & Corporate Bonds |  |  | 299,524 |  |  |  | 209 |  |  |  | (33 | ) |  |  | 299,700 |
Certificates of Deposit |  |  | 5,755 |  |  |  | 30 |  |  |  | — |  |  |  | 5,785 |
Total Marketable Securities |  | $ | 305,279 |  |  | $ | 239 |  |  | $ | (33 | ) |  | $ | 305,485 |

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