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