CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue:
Total revenue	$ 38,514	$ 43,379
Cost of revenue	(23,569)	(20,074)
Gross profit	14,944	23,305
Operating expenses:
Sales and marketing	(11,023)	(9,849)
Research and development, net of government grants	(58,691)	(53,727)
General and administrative expense:
Compensation expense in respect of share options and management equity incentives	(6,951)	(4,984)
Other general and administrative expenses	(42,107)	(37,442)
Total general and administrative expense	(49,058)	(42,426)
Total operating expense	(118,771)	(106,002)
Operating loss	(103,827)	(82,697)
Other income (expense):
Interest expense, net	(31,954)	(29,804)
Other, net	11,612	2,723
Other income (expense), net	(20,342)	(27,081)
Loss before income taxes	(124,169)	(109,778)
Provision for income taxes	(961)	(1,254)
Net loss	(125,130)	(111,032)
Other comprehensive income (loss):
Change in fair value of effective portion of foreign currency cash flow hedges	(355)	582
Unrealized loss on short-term investments	(186)	(898)
Foreign currency gain (loss)	6,007	(2,057)
Provision for pension benefit obligation	2,941	447
Other comprehensive loss, net	8,407	(1,926)
Comprehensive loss	(116,723)	(112,958)
Net loss available to ordinary shareholders - basic and diluted	$ (125,130)	$ (111,032)
Loss per share - basic and diluted	$ (1.23)	$ (1.21)
Weighted-average shares outstanding - basic and diluted	101,910,562	91,637,966
Product Sales [Member]
Revenue:
Total revenue	$ 38,283	$ 35,787
Other Revenues [Member]
Revenue:
Total revenue	$ 231	$ 7,592