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Shareholders' Equity - Additional Information (Detail)	9 Months Ended	133 Months Ended
	Nov. 30, 2019 USD ($) $ / shares shares	Nov. 30, 2019 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 amount	$ 40,000,000	$ 40,000,000

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Total cost of shares repurchased divided by the total number of shares repurchased.

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-Topic 505
-SubTopic 30
-Section 45
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