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Changes in Accrued Warranty Balances (Detail) - USD ($)
$ in Thousands
3 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Commitments and Contingencies Disclosure [Abstract]    
Beginning Balance $ 10,905 $ 13,175
Deductions [1] (6,344) (6,258)
Provision charged to expense 7,939 6,115
Ending Balance $ 12,500 $ 13,032
[1] Primarily claims paid during the period.