Calculation of Basic and Diluted Common Shares Outstanding (Detail) - shares	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Weighted-Average Shares of Common Stock Outstanding	34,466,141	36,336,056	34,931,378	37,149,927
Assumed Exercise of Outstanding Dilutive Options	305,842	424,949	312,723	424,642
Less Shares Repurchased from Proceeds of Assumed Exercised Options	(169,413)	(294,478)	(170,910)	(305,741)
Restricted Stock Units	147,151	139,455	128,467	126,758
Weighted-Average Common Stock and Dilutive Securities Outstanding	34,749,721	36,605,982	35,201,658	37,395,586
Shares Excluded Due to Anti-Dilution Effects	5,558	66,802	22,145	46,736