Fair Value Measurements - Financial Assets and Liabilities, Classified by Level (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Liabilities:
Contingent consideration included in accrued and other current liabilities	$ 5,083	$ 8,042
Contingent consideration included in other non-current liabilities	245	4,217
Fair Value, Measurements, Recurring \| Level 1
Assets:
Cash equivalents	553,644	762,055
Investments for deferred compensation plan	27,969	28,431
Currency derivative assets included in other current assets	0	0
Liabilities:
Contingent consideration included in accrued and other current liabilities	0	0
Contingent consideration included in other non-current liabilities	0	0
Currency derivative liabilities included in accrued and other current liabilities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Cash
Assets:
Investments for deferred compensation plan	164	108
Fair Value, Measurements, Recurring \| Level 1 \| Common stock
Assets:
Investments for deferred compensation plan	1,703	2,329
Fair Value, Measurements, Recurring \| Level 1 \| Money market funds
Assets:
Investments for deferred compensation plan	9,052	6,765
Fair Value, Measurements, Recurring \| Level 1 \| Mutual funds
Assets:
Investments for deferred compensation plan	17,050	19,229
Fair Value, Measurements, Recurring \| Level 2
Assets:
Cash equivalents	0	0
Investments for deferred compensation plan	0	0
Currency derivative assets included in other current assets	3,270	1,517
Liabilities:
Contingent consideration included in accrued and other current liabilities	0	0
Contingent consideration included in other non-current liabilities	0	0
Currency derivative liabilities included in accrued and other current liabilities	150	165
Fair Value, Measurements, Recurring \| Level 2 \| Cash
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 2 \| Common stock
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 2 \| Money market funds
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 2 \| Mutual funds
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 3
Assets:
Cash equivalents	0	0
Investments for deferred compensation plan	0	0
Currency derivative assets included in other current assets	0	0
Liabilities:
Contingent consideration included in accrued and other current liabilities	5,083	8,042
Contingent consideration included in other non-current liabilities	0	3,971
Currency derivative liabilities included in accrued and other current liabilities	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Cash
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Common stock
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Money market funds
Assets:
Investments for deferred compensation plan	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Mutual funds
Assets:
Investments for deferred compensation plan	$ 0	$ 0

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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