Geographic Information - Consolidated Property and Equipment, Net by Country (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 33,242	$ 39,071
United Kingdom [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	14,055	16,890
Switzerland [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 19,187	$ 22,181

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant