Employee Benefit Plan - Additional Information (Detail) - Employee Savings Plan - USD ($) |
3 Months Ended | |
|---|---|---|
Aug. 31, 2016 |
Aug. 31, 2015 |
|
| Defined Contribution Plan Disclosure [Line Items] | ||
| Qualified non-elective contribution | 3.00% | |
| Qualified non-elective contribution expense | $ 8,800 | $ 5,700 |
| X | ||||||||||
- Definition The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Details
|