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Earnings per Share - Additional Information (Detail) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Feb. 29, 2020 | Feb. 28, 2019 | Feb. 28, 2018 | Feb. 28, 2017
Earnings Per Share [Abstract] |  |  |  |
Undistributed earnings | $ 0 |  |  |
Options outstanding | 0 | 61,590 | 172,496 | 172,496

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