CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERENCE SHARES AND CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Redeemable Convertible Preference Shares [Member]	Ordinary Shares [Member]	Additional paid in (Distribution in Excess of) Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance at Mar. 31, 2014	$ (31,536)		$ 247	$ (16,793)	$ 305	$ (15,295)
Beginning balance, Shares at Mar. 31, 2014			342,142
Beginning balance at Mar. 31, 2014		$ 30,763
Beginning balance, Preference Shares at Mar. 31, 2014		28,232,528
Conversion of shares, Amount	31,287	$ (30,763)	$ 30,866	421
Conversion of shares, Shares		(28,232,528)	9,034,405
Issue of shares, net of issue costs, Amount	52,561		$ 52,561
Issue of shares, net of issue costs, Shares			7,444,445
Issue of warrants	8,067			8,067
Issue of shares upon exercise of incentive share options, Amount	$ 304		$ 304
Issue of shares upon exercise of incentive share options, Shares	137,478		137,478
Issue of shares upon exercise of warrants, Amount	$ 1,030		$ 547	483
Issue of shares upon exercise of warrants, Shares			62,104
Net loss	(59,059)					(59,059)
Change in fair value of effective portion of foreign currency cash flow hedges	(293)				(293)
Foreign currency gain (loss) on:
Foreign currency translation loss/Retranslation of foreign entities	(5,114)				(5,114)
Other comprehensive loss	(5,407)				(5,407)
Stock-based compensation	1,138			1,138
Ending balance at Mar. 31, 2015	(1,615)		$ 84,525	(6,684)	(5,102)	(74,354)
Ending balance, Shares at Mar. 31, 2015			17,020,574
Issue of shares, net of issue costs, Amount	36,835		$ 36,835
Issue of shares, net of issue costs, Shares			4,444,445
Issue of warrants	1,190			1,190
Issue of shares upon exercise of incentive share options, Amount	$ 41		$ 41
Issue of shares upon exercise of incentive share options, Shares	8,712		21,212
Issue of shares upon exercise of warrants, Amount	$ 49,667		$ 34,513	15,154
Issue of shares upon exercise of warrants, Shares			3,922,719
Net loss	(33,878)					(33,878)
Change in fair value of effective portion of foreign currency cash flow hedges	9				9
Foreign currency gain (loss) on:
Foreign currency translation loss/Retranslation of foreign entities	(3,028)				(3,028)
Provision for pension benefit obligation	(4,502)				(4,502)
Other comprehensive loss	(7,521)				(7,521)
Stock-based compensation	2,004			2,004
Ending balance at Mar. 31, 2016	$ 46,723		$ 155,914	11,664	(12,623)	(108,232)
Ending balance, Shares at Mar. 31, 2016	25,408,950		25,408,950
Issue of shares, net of issue costs, Amount	$ 16,682		$ 16,682
Issue of shares, net of issue costs, Shares			3,270,000
Exercise of pre-funded warrants, Amount	$ 9		$ 9
Exercise of pre funded warrants, Shares			850,000
Issue of shares upon exercise of incentive share options, Shares	8,483
Issue of shares upon exercise of incentive share options and vesting of RSU's, Amount	$ 12		$ 12
Issue of shares upon exercise of incentive share options and vesting of RSU's, Shares			38,748
Net loss	(85,069)					(85,069)
Change in fair value of effective portion of foreign currency cash flow hedges	(63)				(63)
Unrealized gain on short-term investments	19				19
Foreign currency gain (loss) on:
Long-term investment nature intra-entity balances	6,747				6,747
Foreign currency translation loss/Retranslation of foreign entities	(12,962)				(12,962)
Provision for pension benefit obligation	(410)				(410)
Other comprehensive loss	(6,669)				(6,669)
Stock-based compensation	4,221			4,221
Ending balance at Mar. 31, 2017	$ (24,091)		$ 172,617	$ 15,885	$ (19,292)	$ (193,301)
Ending balance, Shares at Mar. 31, 2017	29,567,698		29,567,698