CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Ordinary Shares [Member]	Additional paid in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance at Mar. 31, 2021	$ (35,581)	$ 540,813	$ 38,116	$ (14,598)	$ (599,912)
Beginning balance, Shares at Mar. 31, 2021		101,264,412
Issue of shares upon exercise of incentive share options and vesting of RSUs	(79)	$ (79)
Issue of shares upon exercise of incentive share options and vesting of RSUs, Shares		262,776
Net loss	(27,292)				(27,292)
Change in fair value of the effective portion of foreign currency cash flow hedges	(112)			(112)
Change in unrealized gain in/on short-term investments	(121)			(121)
Foreign currency cumulative translation adjustment	158			158
Provision for pension benefit obligation	15			15
Other comprehensive loss	(60)			(60)
Stock-based compensation	1,823		1,823
Ending balance at Jun. 30, 2021	(61,189)	$ 540,734	39,939	(14,658)	(627,204)
Ending balance, Shares at Jun. 30, 2021		101,527,188
Beginning balance at Mar. 31, 2022	$ (144,098)	$ 540,736	46,399	(6,191)	(725,042)
Beginning balance, Shares at Mar. 31, 2022	102,611,397	102,611,397
Issue of shares and pre-funded warrants, net of issue costs, Amount	$ 17,903	$ 17,903
Issue of shares and pre-funded warrants, net of issue costs, Shares		32,458,336
Issue of shares upon exercise of incentive share options and vesting of RSUs, Shares		613,826
Net loss	(38,868)				(38,868)
Change in fair value of the effective portion of foreign currency cash flow hedges	0
Change in unrealized gain in/on short-term investments	7			7
Foreign currency cumulative translation adjustment	12,330			12,330
Provision for pension benefit obligation	14			14
Other comprehensive loss	12,351
Stock-based compensation	1,634		1,634
Ending balance at Jun. 30, 2022	$ (151,078)	$ 558,639	$ 48,033	$ 6,160	$ (763,910)
Ending balance, Shares at Jun. 30, 2022	135,683,559	135,683,559