Equity Compensation Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Aug. 31, 2023	Aug. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense related to share based awards	$ 2,638	$ 1,867
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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