Earnings per Share - Computation for Basic and Diluted Earnings (loss) per Share (Detail) - $ / shares	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding	26,026,477	25,995,127	26,036,393
Effect of dilutive RSUs	82,864	0	0
Diluted weighted average common shares outstanding	26,109,341	25,995,127	26,036,393
Earnings per share
Basic	$ 1.11	$ 0.93	$ 1.47
Diluted	1.11	0.93	1.47
Cash dividends per share	$ 0.975	$ 0.900	$ 0.900