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Derivative Financial Instruments and Hedging Activities - Schedule of Summary of Derivative Hedges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2023 | Nov. 30, 2022
Derivative [Line Items] |  |  |  |
Notional Amount | $ 1,459 | $ 3,814 | $ 395 | $ 2,143
Commodity Contracts | Derivatives Not Designated As Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Notional Amount |  |  | $ 15,509 |
Commodity Contracts | Minimum | Derivatives Not Designated As Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Maturity Date |  |  | Sep. 30, 2023 |
Commodity Contracts | Maximum | Derivatives Not Designated As Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Maturity Date |  |  | Dec. 31, 2024 |
Cash Flow Hedges | Commodity Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Notional Amount | $ 62,825 |  | $ 62,825 |
Cash Flow Hedges | Commodity Contracts | Minimum |  |  |  |
Derivative [Line Items] |  |  |  |
Maturity Date |  |  | Sep. 30, 2023 |
Cash Flow Hedges | Commodity Contracts | Maximum |  |  |  |
Derivative [Line Items] |  |  |  |
Maturity Date |  |  | Dec. 31, 2024 |

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