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Shareholders' Equity - Additional Information (Detail) | 12 Months Ended | 136 Months Ended
--- | --- | ---
Feb. 29, 2020 USD ($) $ / shares shares | Feb. 29, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Repurchase of common stock | shares | 126,330 | 1,816,354
Repurchase of common stock, average cost per share | $ / shares | $ 19.56 | $ 15.91
Total amount available to repurchase of shares | $ 11,100,000 |
Maximum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock repurchase program, authorized aggregate amount | $ 40,000,000 | $ 40,000,000

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