Earnings Per Share - Computation for Basic and Diluted Earnings Per Share (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding	25,797,097	26,080,121	25,805,419	26,055,056
Effect of dilutive RSUs	61,714	90,275	62,085	91,365
Diluted weighted average common shares outstanding	25,858,811	26,170,396	25,867,504	26,146,421
Earnings per share
Net earnings - basic	$ 0.47	$ 0.29	$ 0.92	$ 0.57
Net earnings - diluted	0.47	0.29	0.92	0.57
Common Stock, Dividends, Per Share, Cash Paid	$ 0.250	$ 0.250	$ 0.500	$ 0.475