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STOCKBASED COMPENSATION (Details 6) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 28, 2023 | Feb. 28, 2022 | Feb. 28, 2023 | Feb. 28, 2022
Employees Member |  |  |  |
Annual RSUs granted |  | 0 | 151,800 | 120,000
Weighted average market value on the date of the grant of annual RSUs | $ 0 | $ 0 | $ 8.03 | $ 3.17
Annual restricted shares granted |  | 0 | 7,500 | 0
Weighted average market value on the date of the grant of annual restricted shares | 0 | $ 0 | $ 8.00 | $ 0
RSUs granted in lieu of cash payment for salary reductions |  | 0 | 0 | 89,000
Weighted average market value on the date of the grant of RSU in lieu of cash payment | $ 0 | $ 0 | $ 0 | $ 2.50
PRSUs granted based on revenue target thresholds maximum |  | 0 | 80,400 | 270,000
Performance restricted shares granted based on revenue target thresholds maximum | 0 | 0 | 23,700 | 0
Weighted average market value on the date of the grant of PRSUs, performance restricted shares | $ 0 | $ 0 | $ 8.00 | $ 3.41
Board Of Directors |  |  |  |
Annual RSUs granted | 0 | 0 | 44,000 | 43,000
Weighted average market value on the date of the grant of annual RSUs |  | $ 0 | $ 11.35 | $ 8.02
PRSUs granted based on revenue target thresholds maximum |  |  | 30,000 |
Weighted average market value on the date of the grant of PRSUs | $ 0 | $ 0 | $ 8.00 | $ 0

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