Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319

Name:	us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Income Taxes UK Tax Rate Changes (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 01, 2020	Mar. 31, 2021	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Reconciliation of Tax Rate [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent				(1.10%)	33.20%	0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount				$ 4,055	$ 8,383
UNITED KINGDOM
Reconciliation of Tax Rate [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent					20.00%
Scenario, Forecast [Member] \| UNITED KINGDOM
Reconciliation of Tax Rate [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	17.00%	18.00%	19.00%