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Treasury Stock - Narrative (Details) $ / shares in Units, $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 25, 2022 USD ($) $ / shares shares | Nov. 30, 2022 USD ($) | Aug. 31, 2022 USD ($) | Nov. 30, 2021 USD ($) | Nov. 30, 2022 USD ($) | May 31, 2022 USD ($) | Mar. 18, 2020 USD ($)
Stockholders' Equity Attributable to Parent [Abstract] |  |  |  |  |  |  |
Authorized amount of stock to be repurchased |  |  |  |  |  | $ 50.0 | $ 50.0
Number of common stock repurchased (in shares) | shares | 533,793 |  |  |  |  |  |
Treasury stock acquired, average cost per share | $ / shares | $ 40.00 |  |  |  |  |  |
Treasury stock, value acquired | $ 23.3 | $ 26.0 | $ 5.1 | $ 4.2 | $ 31.1 |  |
Common stock, amount repurchased, percent of shares outstanding | 0.016 |  |  |  |  |  |

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