Earnings per Share - Computation for Basic and Diluted Earnings (loss) per Share (Detail) - $ / shares	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding	25,818,737	26,026,477	25,995,127
Effect of dilutive RSUs	132,404	82,864	0
Diluted weighted average common shares outstanding	25,951,141	26,109,341	25,995,127
Earnings per share
Basic	$ 1.83	$ 1.11	$ 0.93
Diluted	1.82	1.11	0.93
Cash dividends per share	$ 1.00	$ 0.975	$ 0.90