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, 2020	$ (8,489)	$ 459,931	$ 33,132	$ (12,672)	$ (488,880)
Beginning balance, Shares at Mar. 31, 2020		80,398,326
Issue of shares, net of issue costs, Amount	80,685	$ 80,685
Issue of shares, net of issue costs, Shares		20,294,117
Issue of shares upon exercise of incentive share options and vesting of RSUs	197	$ 197
Issue of shares upon exercise of incentive share options and vesting of RSU's, Shares		571,969
Net loss	(111,032)				(111,032)
Change in the fair value of the effective portion of foreign currency cash flow hedges	582			582
Change in unrealized gain on short-term investments	(898)			(898)
Foreign currency gain (loss) on:
Long-term investment nature intra-entity balances	(27,251)			(27,251)
Retranslation of foreign entities	25,194			25,194
Provision for pension benefit obligation	447			447
Other comprehensive loss	(1,926)			(1,926)
Stock-based compensation	4,984		4,984
Ending balance at Mar. 31, 2021	$ (35,581)	$ 540,813	38,116	(14,598)	(599,912)
Ending balance, Shares at Mar. 31, 2021	101,264,412	101,264,412
Issue of shares, net of issue costs, Amount	$ (136)		(136)
Issue of shares upon exercise of incentive share options and vesting of RSUs	(77)	$ (77)
Issue of shares upon exercise of incentive share options and vesting of RSU's, Shares		478,543
Issue of Consent Shares associated with Senior Secured Note modification	2,263		2,263
Issue of Consent Shares associated with Senior Secured Note modification, Shares		868,442
Net loss	(125,130)				(125,130)
Change in the fair value of the effective portion of foreign currency cash flow hedges	(355)			(355)
Change in unrealized gain on short-term investments	(186)			(186)
Foreign currency gain (loss) on:
Long-term investment nature intra-entity balances	22,645			22,645
Retranslation of foreign entities	(16,638)			(16,638)
Provision for pension benefit obligation	2,941			2,941
Other comprehensive loss	8,407			8,407
Stock-based compensation	6,156		6,156
Ending balance at Mar. 31, 2022	$ (144,098)	$ 540,736	$ 46,399	$ (6,191)	$ (725,042)
Ending balance, Shares at Mar. 31, 2022	102,611,397	102,611,397