Schedule of Earnings Per Share (Detail) - shares	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Weighted-Average Shares of Common Stock Outstanding	33,378,050	34,811,560	36,798,354
Assumed Exercise of Outstanding Dilutive Options	218,434	304,889	418,659
Less Shares Repurchased from Proceeds of Assumed Exercised Options	(82,734)	(157,457)	(290,590)
Restricted Stock Units	132,645	138,879	126,519
Weighted-Average Common Stock and Dilutive Securities Outstanding	33,646,395	35,097,871	37,052,942