CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Total revenue	$ 10,172	$ 8,751	$ 28,728	$ 33,741
Cost of revenue	(7,928)	(4,970)	(17,579)	(14,883)
Gross profit	2,244	3,781	11,149	18,858
Operating expenses:
Sales and marketing	(2,878)	(2,283)	(8,011)	(6,757)
Research and development, net of government grants	(13,260)	(14,350)	(42,545)	(38,508)
General and administrative expense:
Compensation expense in respect of share options and management equity incentives	(2,319)	(1,214)	(5,546)	(3,498)
Other general and administrative expenses	(15,038)	(7,524)	(32,009)	(24,334)
Total general and administrative expense	(17,357)	(8,738)	(37,555)	(27,832)
Total operating expense	(33,495)	(25,371)	(88,111)	(73,097)
Operating loss	(31,251)	(21,590)	(76,962)	(54,239)
Other (expense) income:
Interest expense, net	(9,559)	(9,404)	(21,914)	(22,632)
Other, net	(3,507)	617	677	6,179
Other expense, net	(13,066)	(8,787)	(21,237)	(16,453)
Loss before income taxes	(44,317)	(30,377)	(98,199)	(70,692)
Provision for income taxes	(504)	(1,303)	(1,019)	(999)
Net loss	(44,821)	(31,680)	(99,218)	(71,691)
Other comprehensive income (loss):
Change in fair value of foreign currency cash flow hedges	(37)	295	(380)	571
Change in unrealized gain on short-term investments		111	(193)	(372)
Foreign currency gain (loss)	788	1,606	2,798	(2,026)
Provision for pension benefit obligation	15	13	44	(135)
Other comprehensive loss, net	766	2,025	2,269	(1,962)
Comprehensive loss	(44,055)	(29,655)	(96,949)	(73,653)
Net loss available to ordinary shareholders - basic and diluted	$ (44,821)	$ (31,680)	$ (99,218)	$ (71,691)
Loss per share - basic and diluted	$ (0.44)	$ (0.31)	$ (0.98)	$ (0.81)
Weighted-average shares outstanding - basic and diluted	102,127,141	101,016,040	101,695,746	88,512,823
Product Sales [Member]
Revenue:
Total revenue	$ 10,172	$ 8,740	$ 28,497	$ 26,207
Other Revenues [Member]
Revenue:
Total revenue		$ 11	$ 231	$ 7,534