Accrued Loss Reserves (Detail) - USD ($) $ in Thousands |
May 31, 2018 |
May 31, 2017 |
---|---|---|
Schedule of Accrued Liabilities [Line Items] | ||
Accrued losses | $ 22,132 | $ 31,735 |
Accrued Loss Reserves - Noncurrent | 37,106 | 33,417 |
Accrued product liability reserves | ||
Schedule of Accrued Liabilities [Line Items] | ||
Accrued losses | 12,900 | 14,932 |
Accrued Loss Reserves - Noncurrent | 29,902 | 28,222 |
Accrued warranty reserves | ||
Schedule of Accrued Liabilities [Line Items] | ||
Accrued losses | 8,088 | 15,701 |
Accrued Loss Reserves - Noncurrent | 3,633 | 3,448 |
Accrued environmental reserves | ||
Schedule of Accrued Liabilities [Line Items] | ||
Accrued losses | 1,144 | 1,102 |
Accrued Loss Reserves - Noncurrent | $ 3,571 | $ 1,747 |