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Equity Compensation Plans - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2023 | Nov. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Compensation expense related to share based awards | $ 3,512 | $ 2,632 | $ 6,150 | $ 4,499
Employee Stock Purchase Plan | 2011 Employee Stock Purchase Plan |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Annual maximum limit percentage of compensation to purchase shares |  |  | 5.00% |
Employee stock purchase plan stock price percentage |  |  | 10.00% |
Minimum |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Stock option vesting period |  |  | 3 years |
Stock option contractual terms |  |  | 5 years |
Minimum | 2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs) |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Stock option vesting period |  |  | 3 years |
Average |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Stock option contractual terms |  |  | 7 years |
Maximum |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Stock option vesting period |  |  | 5 years |
Stock option contractual terms |  |  | 10 years |
Maximum | 2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs) |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Stock option vesting period |  |  | 5 years |

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