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v3.20.2

Revenue - Additional Information (Detail) $ in Thousands | 3 Months Ended |
--- | --- | ---
Aug. 31, 2020 USD ($) Segment | Aug. 31, 2019 USD ($) | May 31, 2020 USD ($)
Disaggregation Of Revenue [Line Items] |  |  |
Number of reportable segments | Segment | 4 |  |
Revenue performance obligation description of payment terms | Payment terms and conditions vary by contract type, although our customers’ payment terms generally include a requirement to pay within 30 to 60 days of fulfilling our performance obligations. |  |
Revenue, Practical Expedient, Financing Component [true false] | false |  |
Net contract assets (liabilities) | $ 10,726 |  |
Net Sales | 1,606,670 | $ 1,472,764 |
Long-term deferred revenue | 66,400 |  | $ 66,000
General Contracting And Roofing Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net Sales | $ 25,100 |  |

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