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v3.25.1

Stock Options and Stock-Based Compensation - Stock Options (Detail) - $ / shares | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options outstanding, beginning balance, Shares | 1,469,181 | 1,955,571 | 2,171,628
Options granted, Shares | 115,225 | 179,700 | 504,900
Options exercised, Shares | (364,422) | (603,879) | (627,903)
Options cancelled/forfeited, Shares | (34,257) | (62,211) | (93,054)
Options outstanding, ending balance, Shares | 1,185,727 | 1,469,181 | 1,955,571
Options granted, weighted average exercise price | $ 101.18 | $ 68.92 | $ 53.14
Options exercised, weighted average exercise price | 34.27 | 26.77 | 21.07
Options cancelled/forfeited, weighted average exercise price | 57.57 | 52.61 | 46.79
Weighted average exercise price per share | $ 51.07 | $ 43.13 | $ 36.03
Options available for future grants | 1,775,459 | 1,856,427 | 1,973,916
Exercisable options | 740,454 | 807,759 | 959,109
Minimum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Price range of outstanding options | $ 11.05 | $ 11.05 | $ 11.05
Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Price range of outstanding options | $ 110.18 | $ 78.45 | $ 65.72

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