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v3.20.2

Summary of Unaudited Consolidated Statement of Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2020 | Feb. 29, 2020 | Nov. 30, 2019 | Aug. 31, 2019 | May 31, 2019 | Feb. 28, 2019 | Nov. 30, 2018 | Aug. 31, 2018 | May 31, 2020 | May 31, 2019 | May 31, 2018
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | $ 418,170 | $ 414,186 | $ 397,930
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 221,891 | 222,266 | 211,658
Gross margin | $ 51,729 | $ 45,330 | $ 51,026 | $ 48,194 | $ 50,530 | $ 44,628 | $ 50,033 | $ 46,729 | 196,279 | 191,920 | 186,272
Operating Expenses |  |  |  |  |  |  |  |  |  |  |
Sales and marketing |  |  |  |  |  |  |  |  | 69,675 | 70,230 | 66,929
Total operating expenses |  |  |  |  |  |  |  |  | 128,756 | 123,826 | 116,078
Operating income |  |  |  |  |  |  |  |  | 67,523 | 68,094 | 70,194
Product Revenues |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 335,539 | 339,439 | 331,288
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 173,566 | 179,660 | 173,725
Service Revenues |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 82,631 | 74,747 | 66,642
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | $ 48,325 | $ 42,606 | 37,933
Accounting Standards Update 2014-09 | Calculated under Revenue Guidance in Effect before Topic 606 |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 402,252
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  |  | 212,000
Gross margin |  |  |  |  |  |  |  |  |  |  | 190,252
Operating Expenses |  |  |  |  |  |  |  |  |  |  |
Sales and marketing |  |  |  |  |  |  |  |  |  |  | 70,909
Total operating expenses |  |  |  |  |  |  |  |  |  |  | 120,058
Operating income |  |  |  |  |  |  |  |  |  |  | 70,194
Accounting Standards Update 2014-09 | Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | (4,322)
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  |  | (342)
Gross margin |  |  |  |  |  |  |  |  |  |  | (3,980)
Operating Expenses |  |  |  |  |  |  |  |  |  |  |
Sales and marketing |  |  |  |  |  |  |  |  |  |  | (3,980)
Total operating expenses |  |  |  |  |  |  |  |  |  |  | (3,980)
Accounting Standards Update 2014-09 | Product Revenues | Calculated under Revenue Guidance in Effect before Topic 606 |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 335,554
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  |  | 174,067
Accounting Standards Update 2014-09 | Product Revenues | Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | (4,266)
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  |  | (342)
Accounting Standards Update 2014-09 | Service Revenues | Calculated under Revenue Guidance in Effect before Topic 606 |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 66,698
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  |  | 37,933
Accounting Standards Update 2014-09 | Service Revenues | Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | $ (56)

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