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Disaggregated Revenue by Geographic Location (Detail) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2019 | May 31, 2018 | May 31, 2017
Revenues by Geographic Location [Line Items] |  |  |
Total revenue | $ 414,186 | $ 397,930 | $ 358,277
Domestic |  |  |
Revenues by Geographic Location [Line Items] |  |  |
Total revenue | 248,304 | 248,236 |
International |  |  |
Revenues by Geographic Location [Line Items] |  |  |
Total revenue | $ 165,882 | $ 149,694 |

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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