Stock-Based Compensation and Stock Options - Stock Options (Detail) - $ / shares	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Options outstanding, beginning balance, Shares	575,263	706,728	651,857	723,876
Options granted, Shares	43,000	69,200	59,500	149,400
Options exercised, Shares	(24,666)	(18,210)	(114,913)	(101,896)
Options cancelled/forfeited, Shares	(3,523)	(1,256)	(6,370)	(14,918)
Options outstanding, ending balance, Shares	590,074	756,462	590,074	756,462
Options outstanding, beginning balance, Weighted Average Exercise Price	$ 116.31	$ 96.14	$ 108.1	$ 84.55
Options granted, Weighted Average Exercise Price	200.55	155.99	206.57	155.69
Options exercised, Weighted Average Exercise Price	94.78	67.63	79.31	51.17
Options cancelled/forfeited, Weighted Average Exercise Price	149.42	126.62	148.34	128.65
Options outstanding, ending balance, Weighted Average Exercise Price	$ 123.15	$ 102.25	$ 123.15	$ 102.25