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Summary of Activity in Restructuring Reserves (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Aug. 31, 2021 | Aug. 31, 2020
Restructuring Cost And Reserve [Line Items] |  |
Charges (credits) to expense | $ 1,010 | $ 4,233
MAP to Growth |  |
Restructuring Cost And Reserve [Line Items] |  |
Beginning balance | 5,720 | 13,237
Charges (credits) to expense | 1,010 | 4,233
Cash payments charged against reserve | (3,014) | (6,205)
Non-cash charges and other adjustments | (379) | (234)
Ending balance | 3,337 | 11,031
MAP to Growth | Severance and Benefit Costs (Credits) |  |
Restructuring Cost And Reserve [Line Items] |  |
Beginning balance | 4,430 | 7,357
Charges (credits) to expense | (278) | 2,478
Cash payments charged against reserve | (1,766) | (4,942)
Non-cash charges and other adjustments | 0 | 0
Ending balance | 2,386 | 4,893
MAP to Growth | Facility Closure and Other Related Costs |  |
Restructuring Cost And Reserve [Line Items] |  |
Beginning balance | 1,290 | 5,880
Charges (credits) to expense | 1,286 | 1,521
Cash payments charged against reserve | (1,248) | (1,263)
Non-cash charges and other adjustments | (377) | 0
Ending balance | 951 | 6,138
MAP to Growth | Other Restructuring Costs |  |
Restructuring Cost And Reserve [Line Items] |  |
Beginning balance | 0 | 0
Charges (credits) to expense | 2 | 234
Cash payments charged against reserve | 0 | 0
Non-cash charges and other adjustments | (2) | (234)
Ending balance | $ 0 | $ 0

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