Stock Option Activity (Detail)	9 Months Ended
Dec. 31, 2022 $ / shares shares
Share-Based Payment Arrangement [Abstract]
Number of Shares, Outstanding Options at March 31, 2022 \| shares	456,849
Number of Shares, Granted \| shares	56,621
Number of Shares, Exercised \| shares	(19,241)
Number of Shares, Cancelled \| shares	(3,178)
Number of Shares, Outstanding Options at September 30, 2022 \| shares	491,051
Number of Shares, Options Exercisable at September 30, 2022 \| shares	299,948
Weighted-Average Exercise Price, Outstanding Options at March 31, 2022 \| $ / shares	$ 83.81
Weighted-Average Exercise Price, Granted \| $ / shares	125.90
Weighted-Average Exercise Price, Exercised \| $ / shares	67.74
Weighted-Average Exercise Price, Cancelled \| $ / shares	109.15
Weighted-Average Exercise Price, Outstanding Options at September 30, 2022 \| $ / shares	89.13
Weighted Average Fair Value of Options Granted During the Year \| $ / shares	$ 48.36

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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 number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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