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Share-based Compensation - Share-based Compensation and Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Feb. 28, 2022 | Feb. 28, 2021 | Feb. 29, 2020
Share based compensation expense and related income tax benefits |  |  |
Compensation expense | $ 9,449 | $ 7,330 | $ 6,290
Income tax benefits | $ 1,984 | $ 1,539 | $ 1,321

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