Provision for Taxes (Reconciliation of total amounts of unrecognized tax benefits roll forward) (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits beginning balance	$ 35,739	$ 26,720
Revaluation based on change in after tax benefit		5,755
Additions based on tax positions related to the current year	1,887	4,139
Reductions for tax positions of prior years	(46)	(96)
Settlements	(379)	(779)
Unrecognized tax benefits ending balance	$ 37,201	$ 35,739

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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