CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERENCE SHARES AND CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Redeemable Convertible Preference Shares [Member]	Ordinary Shares [Member]	Deferred Shares [Member]	Additional paid in (Distribution in Excess of) Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance at Mar. 31, 2013	$ (23,061)				$ (17,745)	$ (186)	$ (5,130)
Beginning balance, Shares at Mar. 31, 2013			75,914	206,184
Beginning balance at Mar. 31, 2013		$ 28,021
Beginning balance, Preference Shares at Mar. 31, 2013		27,160,855
Issue of shares upon exercise of warrants, Amount	19	$ 150			19
Issue of shares upon exercise of warrants, Shares		142,506
Issue of shares, net of issue costs, Amount	$ 247	$ 2,592	$ 247
Issue of shares, net of issue costs, Shares		929,167	60,044
Conversion of shares, Shares			206,184	(206,184)
Issue of shares upon exercise of incentive share options, Shares	60,044
Net loss	$ (10,165)						(10,165)
Change in fair value of effective portion of foreign currency cash flow hedges	94					94
Foreign currency gain (loss)	397					397
Other comprehensive income (loss)	491					491
Stock-based compensation	933				933
Ending balance at Mar. 31, 2014	(31,536)		$ 247		(16,793)	305	(15,295)
Ending balance, Shares at Mar. 31, 2014			342,142
Ending balance at Mar. 31, 2014		$ 30,763
Ending balance, Preference Shares at Mar. 31, 2014		28,232,528
Issue of shares upon exercise of warrants, Amount	1,030		$ 547		483
Issue of shares upon exercise of warrants, Shares			62,104
Issue of shares, net of issue costs, Amount	52,561		$ 52,561
Issue of shares, net of issue costs, Shares			7,444,445
Conversion of shares, Amount	31,287	$ (30,763)	$ 30,866		421
Conversion of shares, Shares		(28,232,528)	9,034,405
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
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)	(5,114)					(5,114)
Other comprehensive income (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		17,020,574
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
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
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)	(3,028)					(3,028)
Provision for pension benefit obligation	(4,502)					(4,502)
Other comprehensive income (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