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Capital Stock and Stock-Based Awards (Details) - Schedule of employee stock purchase plan activity - Employee Stock Purchase Plan - $ / shares | 12 Months Ended
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May 31, 2021 | May 31, 2020 | May 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares issued | 67,097 | 65,714 | 48,000
Weighted average purchase price per share (in dollars per share) | $ 22.19 | $ 27.84 | $ 36.25

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