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ShareBased Payments (Details 2) - Restricted Stock Units [Member] - $ / shares
3 Months Ended 6 Months Ended
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2023
Aug. 31, 2022
Number Of Units Outstanding, Beginning 4,306,655 4,090,775 3,888,618 4,018,567
Number Of Units, Granted 115,364 66,744 585,364 151,605
Number of Units, Settled     51,963 12,653
Number of Units, Forfeited (4,331) (28,801) (4,331) (28,801)
Number Of Units Outstanding, Ending 4,417,688 4,128,718 4,417,688 4,128,718
Number Of Units Outstanding Vested, Ending 1,635,241 1,563,497 1,635,241 1,563,497
Weighted Average Exercise Price Outstanding, Beginning $ 6.61 $ 7.37 $ 7.09 $ 7.42
Weighted Average Exercise Price, Granted 3.17 4.05 2.93 5.14
Weighted Average Exercise Price, Settled 0 0 8.66 13.04
Weighted Average Exercise Price, Forfeited 8.21 8.68 8.21 8.68
Weighted Average Exercise Price Outstanding, Ending 6.52 7.31 6.52 7.31
Weighted Average Exercise Price Outstanding Vested, Ending $ 6.22 $ 6.29 $ 6.22 $ 6.29