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v3.25.1

Stock Options and Stock-Based Compensation - Stock Options Outstanding and Exercisable (Detail) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Number of Outstanding Options | 1,185,727 | 1,469,181 | 1,955,571 | 2,171,628
Weighted Average Remaining Contractual Life | 2 years 11 months 12 days |  |  |
Outstanding Options – Weighted Average Exercise Price | $ 51.07 | $ 43.13 | $ 36.03 |
Exercisable Options – Number of Exercisable Options | 740,454 |  |  |
Exercisable Options – Weighted Average Exercise Price | $ 39.87 |  |  |
Range of Exercise Price, $11.05 to $29.23 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of Exercise Price, lower limit | 11.05 |  |  |
Range of Exercise Price, upper limit | $ 29.23 |  |  |
Number of Outstanding Options | 337,577 |  |  |
Weighted Average Remaining Contractual Life | 2 years 1 month 20 days |  |  |
Outstanding Options – Weighted Average Exercise Price | $ 22.42 |  |  |
Exercisable Options – Number of Exercisable Options | 337,577 |  |  |
Exercisable Options – Weighted Average Exercise Price | $ 22.42 |  |  |
Range of Exercise Price, $29.24 to $52.00 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of Exercise Price, lower limit | 29.24 |  |  |
Range of Exercise Price, upper limit | $ 52 |  |  |
Number of Outstanding Options | 358,978 |  |  |
Weighted Average Remaining Contractual Life | 2 years 6 months 10 days |  |  |
Outstanding Options – Weighted Average Exercise Price | $ 48.86 |  |  |
Exercisable Options – Number of Exercisable Options | 219,751 |  |  |
Exercisable Options – Weighted Average Exercise Price | $ 47.56 |  |  |
Range of Exercise Price, $52.01 to $66.85 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of Exercise Price, lower limit | 52.01 |  |  |
Range of Exercise Price, upper limit | $ 66.85 |  |  |
Number of Outstanding Options | 330,661 |  |  |
Weighted Average Remaining Contractual Life | 3 years 2 months 23 days |  |  |
Outstanding Options – Weighted Average Exercise Price | $ 62.32 |  |  |
Exercisable Options – Number of Exercisable Options | 169,138 |  |  |
Exercisable Options – Weighted Average Exercise Price | $ 61.84 |  |  |
Range of Exercise Price, $66.86 to $110.18 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Range of Exercise Price, lower limit | 66.86 |  |  |
Range of Exercise Price, upper limit | $ 110.18 |  |  |
Number of Outstanding Options | 158,511 |  |  |
Weighted Average Remaining Contractual Life | 5 years 18 days |  |  |
Outstanding Options – Weighted Average Exercise Price | $ 93.6 |  |  |
Exercisable Options – Number of Exercisable Options | 13,988 |  |  |
Exercisable Options – Weighted Average Exercise Price | $ 74.2 |  |  |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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