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.

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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

+ 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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (e)(1)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Stock-Based Compensation and Stock Options - Stock Options Outstanding and Exercisable (Detail) - $ / shares	6 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding Options Number of Outstanding Options	1,071,486	1,174,393	1,185,727	1,285,827	1,407,501	1,469,181
Outstanding Options Weighted Average Remaining Contractual Life	2 years 10 months 24 days
Outstanding Options – Weighted Average Exercise Price	$ 56.73	$ 54.23	$ 51.07	$ 47.71	$ 45.34	$ 43.13
Exercisable Options – Number of Exercisable Options	688,970
Exercisable Options – Weighted Average Exercise Price	$ 45.56
Range of Exercise Price, $14.44 to $39.83 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, lower limit	14.44
Range of Exercise Price, upper limit	$ 39.83
Outstanding Options Number of Outstanding Options	269,513
Outstanding Options Weighted Average Remaining Contractual Life	2 years 2 months 1 day
Outstanding Options – Weighted Average Exercise Price	$ 25.39
Exercisable Options – Number of Exercisable Options	269,513
Exercisable Options – Weighted Average Exercise Price	$ 25.39
Range of Exercise Price, $39.84 to $52.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, lower limit	39.84
Range of Exercise Price, upper limit	$ 52
Outstanding Options Number of Outstanding Options	282,940
Outstanding Options Weighted Average Remaining Contractual Life	2 years 4 months 13 days
Outstanding Options – Weighted Average Exercise Price	$ 50.99
Exercisable Options – Number of Exercisable Options	190,093
Exercisable Options – Weighted Average Exercise Price	$ 50.77
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
Outstanding Options Number of Outstanding Options	312,864
Outstanding Options Weighted Average Remaining Contractual Life	2 years 9 months 3 days
Outstanding Options – Weighted Average Exercise Price	$ 62.37
Exercisable Options – Number of Exercisable Options	191,808
Exercisable Options – Weighted Average Exercise Price	$ 61.39
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
Outstanding Options Number of Outstanding Options	206,169
Outstanding Options Weighted Average Remaining Contractual Life	4 years 9 months 10 days
Outstanding Options – Weighted Average Exercise Price	$ 97.04
Exercisable Options – Number of Exercisable Options	37,556
Exercisable Options – Weighted Average Exercise Price	$ 83.05