Earnings Per Share - Computation for Basic and Diluted Earnings Per Share (Detail) - $ / shares	3 Months Ended
	May 31, 2020	May 31, 2019
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding	25,975,010	26,028,337
Diluted weighted average common shares outstanding	25,975,010	26,028,337
Earnings per share
Net earnings - basic	$ 0.16	$ 0.37
Net earnings - diluted	0.16	0.37
Cash dividends	$ 0.225	$ 0.225