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Fair Value Measurements - Financial Assets and Liabilities, Classified by Level (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Mar. 31, 2021
Assets:    
Trading investments for deferred compensation plan $ 29,711 $ 24,809
Liabilities:    
Contingent consideration for business acquisition included in accrued and other current liabilities 8,580 6,967
Contingent consideration for business acquisition included in other non-current liabilities 3,971 0
Fair Value, Measurements, Recurring | Level 1    
Assets:    
Cash equivalents 475,187 669,759
Trading investments for deferred compensation plan 29,711 24,809
Currency exchange derivative assets included in other current assets 0 0
Liabilities:    
Contingent consideration for business acquisition included in accrued and other current liabilities 0 0
Contingent consideration for business acquisition included in other non-current liabilities 0 0
Currency exchange derivative liabilities included in accrued and other current liabilities 0 0
Fair Value, Measurements, Recurring | Level 1 | Cash    
Assets:    
Trading investments for deferred compensation plan 349 31
Fair Value, Measurements, Recurring | Level 1 | Common stock    
Assets:    
Trading investments for deferred compensation plan 2,240 1,569
Fair Value, Measurements, Recurring | Level 1 | Money market funds    
Assets:    
Trading investments for deferred compensation plan 7,117 6,734
Fair Value, Measurements, Recurring | Level 1 | Mutual funds    
Assets:    
Trading investments for deferred compensation plan 20,005 16,475
Fair Value, Measurements, Recurring | Level 2    
Assets:    
Cash equivalents 0 0
Trading investments for deferred compensation plan 0 0
Currency exchange derivative assets included in other current assets 198 5,452
Liabilities:    
Contingent consideration for business acquisition included in accrued and other current liabilities 0 0
Contingent consideration for business acquisition included in other non-current liabilities 0 0
Currency exchange derivative liabilities included in accrued and other current liabilities 808 100
Fair Value, Measurements, Recurring | Level 2 | Cash    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 2 | Common stock    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 2 | Money market funds    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 2 | Mutual funds    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 3    
Assets:    
Cash equivalents 0 0
Trading investments for deferred compensation plan 0 0
Currency exchange derivative assets included in other current assets 0 0
Liabilities:    
Contingent consideration for business acquisition included in accrued and other current liabilities 8,042 6,430
Contingent consideration for business acquisition included in other non-current liabilities 3,971 0
Currency exchange derivative liabilities included in accrued and other current liabilities 0 0
Fair Value, Measurements, Recurring | Level 3 | Cash    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 3 | Common stock    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 3 | Money market funds    
Assets:    
Trading investments for deferred compensation plan 0 0
Fair Value, Measurements, Recurring | Level 3 | Mutual funds    
Assets:    
Trading investments for deferred compensation plan $ 0 $ 0