CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Total revenue	$ 8,856	$ 9,467	$ 17,670	$ 18,556
Cost of revenue	(21,117)	(4,875)	(27,237)	(9,652)
Gross margin	(12,261)	4,592	(9,567)	8,904
Operating expenses:
Sales and marketing	(3,513)	(2,640)	(6,819)	(5,133)
Research and development, net of government grants	(14,261)	(15,754)	(28,407)	(29,285)
General and administrative expense:
Compensation expense in respect of share options and management equity incentives	(35)	(1,404)	(1,669)	(3,227)
Other general and administrative expenses	(7,661)	(8,618)	(17,064)	(16,971)
Total general and administrative expense	(7,696)	(10,022)	(18,733)	(20,198)
Total operating expense	(25,470)	(28,416)	(53,959)	(54,616)
Operating loss	(37,731)	(23,824)	(63,526)	(45,712)
Other (expense) income:
Interest income (expense), net	7,386	(9,352)	(1,188)	(12,354)
Other, net	(15,214)	5,916	(19,580)	4,184
Other income (expense), net	(7,828)	(3,436)	(20,768)	(8,170)
Loss before income taxes	(45,559)	(27,260)	(84,294)	(53,882)
Provision for income taxes	(367)	155	(500)	(515)
Net loss	(45,926)	(27,105)	(84,794)	(54,397)
Other comprehensive income (loss):
Change in fair value of foreign currency cash flow hedges	0	(231)	0	(343)
Change in unrealized gain on short-term investments	19	(72)	26	(193)
Foreign currency gain	14,846	1,852	27,176	2,010
Provision for pension benefit obligation	14	14	28	29
Other comprehensive income (loss), net	14,879	1,563	27,230	1,503
Comprehensive loss	(31,047)	(25,542)	(57,564)	(52,894)
Net loss available to ordinary shareholders - basic	(45,926)	(27,105)	(84,794)	(54,397)
Net loss available to ordinary shareholders - diluted	$ (45,926)	$ (33,858)	$ (84,794)	$ (54,397)
Loss per share - basic	$ (10.81)	$ (10.67)	$ (24.67)	$ (21.44)
Loss per share - diluted	$ (10.81)	$ (11.28)	$ (24.67)	$ (21.44)
Weighted-average shares outstanding - basic	4,249,675	2,539,191	3,436,702	2,536,992
Weighted-average shares outstanding - diluted	4,249,675	3,002,154	3,436,702	2,536,992
Product Sales [Member]
Revenue:
Total revenue	$ 8,856	$ 9,284	$ 17,670	$ 18,325
Other Revenues [Member]
Revenue:
Total revenue	$ 0	$ 183	$ 0	$ 231