Share-Based Compensation - Stock Based Compensation Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Pre-tax share-based compensation costs charged against income	$ 3,219	$ 2,892	$ 5,097	$ 4,356
Income tax benefit recognized on compensation costs	369	451	512	563
Total fair value of options and RSUs vested during the period	937	1,015	7,943	6,796
Cash received from the exercise of stock options	503	69	2,707	1,285
Tax benefits realized from tax deductions resulting from RSU issuances and stock option exercises	$ 350	$ 4	$ 2,071	$ 948

Effective Income Tax Rate Reconciliation, Deduction, Restricted Stock Issuances And Stock Options, Amount

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Vested in Period, Total Fair Value

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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