Stock-Based Compensation And Employee Benefit Plans (Restricted Stock Units Vesting Description) (Details)	12 Months Ended
Mar. 31, 2019
Vesting Year3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff Vesting Period	three
Vesting Year4 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff Vesting Period	four

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration