Incentive Compensation Plans (Narrative) (Details) - Omnibus Incentive Plan [Member] $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2020 USD ($) shares	Sep. 30, 2020 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 4,635	$ 5,453
Unrecognized compensation expense	$ 62,674	$ 62,674
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted in period \| shares	307,485	5,724,801
Restricted Stock Units [Member] \| Graded Vesting Schedule [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Restricted Stock Units [Member] \| Cliff Vesting Schedule [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Cash Settled Restricted Stock Units CSRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Granted in period \| shares	0	172,524
Vesting percentage		100.00%
eRx Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liquidity event, percentage threshold of shares sold		25.00%
Compensation expense	$ 1,400	$ 1,468
Unrecognized compensation expense	$ 1,476	$ 1,476
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Granted in period \| shares		1
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years

Share-based compensation, Liquidity event, percentage threshold of shares sold

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

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

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