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v3.25.1

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares available for future grants (in shares) | 2,837,222 |  |
Stock options granted (in shares) | 266,027 | 200,314 | 310,140
Stock-based compensation expense | $ 5,869 | $ 7,022 | $ 6,232
Stock-based compensation expense, net of tax | $ 1,161 | $ 730 | $ 848
Market price per unit of stock award (usd per share) | $ 98.62 | $ 94.34 | $ 66.90
Unrecognized compensation expense associated with non-vested incentive awards outstanding | $ 64,214 |  |
Nonvested stock, weighted average remaining contractual term | 27 months |  |
Restricted Stock Units (RSU) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Market price per unit of stock award (usd per share) | $ 94.63 |  |
Stock unit grant during period (in shares) | 361,222 |  |
Restricted Shares Restricted Stock Units and Market Share Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense | $ 21,867 | $ 23,585 | $ 20,139
Stock unit grant during period (in shares) | 9,972 | 8,386 | 1,635
Equity-based compensation expense, tax benefit | $ 3,520 | $ 4,557 | $ 3,746
Management | Nonqualified Stock Options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options granted (in shares) | 266,027 |  |
Vesting period, in years | 3 years |  |
Management | Restricted Stock Units (RSU) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Market price per unit of stock award (usd per share) | $ 94.63 | $ 94.31 | $ 70.88
Stock unit grant during period (in shares) | 361,222 | 269,751 | 345,449
Non Employee Directors | Restricted Stock Units (RSU) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock units granted (in shares) | 19,214 | 21,147 | 39,792
Market price per unit of stock award (usd per share) | $ 76.52 | $ 76.83 | $ 42.95
Equity Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares available for future grants (in shares) | 3,614,500 |  |
Stock Options Issued In Fiscal 2010 | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options expiration period (in years) | 10 years |  |

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