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Stock-Based Compensation (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 29, 2024 | Feb. 28, 2023 | Feb. 29, 2024 | Feb. 28, 2023
Stock-Based Compensation (Details) - Schedule of stock-based compensation [Line Items] |  |  |  |
Stock-based compensation expense | $ 2.3 | $ 2.3 | $ 8.7 | $ 8.2
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period | 0.1 | 0.1 | 0.5 | 0.7
Stock option expense |  |  |  |
Stock-Based Compensation (Details) - Schedule of stock-based compensation [Line Items] |  |  |  |
Stock-based compensation expense | $ 0.6 | $ 0.7 | $ 3.6 | $ 3.7
Restricted stock unit expense |  |  |  |
Stock-Based Compensation (Details) - Schedule of stock-based compensation [Line Items] |  |  |  |
Stock-based compensation expense | 1.6 | 1.4 | 4.5 | 3.7
Management stock purchase plan |  |  |  |
Stock-Based Compensation (Details) - Schedule of stock-based compensation [Line Items] |  |  |  |
Stock-based compensation expense | 0.0 | 0.1 | 0.3 | 0.5
Employee stock purchase plan |  |  |  |
Stock-Based Compensation (Details) - Schedule of stock-based compensation [Line Items] |  |  |  |
Stock-based compensation expense | $ 0.1 | $ 0.1 | $ 0.3 | $ 0.3

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