CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Product sales	$ 4,841	$ 4,354	$ 15,401	$ 13,477
Other revenues			1,300
Total revenue	4,841	4,354	16,701	13,477
Cost of revenue	(2,602)	(2,225)	(8,454)	(7,100)
Gross profit	2,239	2,129	8,247	6,377
Operating expenses:
Sales and marketing	(1,836)	(918)	(4,367)	(2,350)
Research and development, net of government grants	(17,183)	(6,931)	(43,479)	(22,122)
General and administrative expense:
Compensation expense in respect of share options and management equity incentives	(1,108)	(566)	(3,089)	(1,380)
Other general and administrative expenses	(4,542)	(6,493)	(13,633)	(16,768)
Total general and administrative expense	(5,650)	(7,059)	(16,722)	(18,148)
Total operating expense	(24,669)	(14,908)	(64,568)	(42,620)
Operating loss	(22,430)	(12,779)	(56,321)	(36,243)
Other income (expense):
Interest expense, net	(4,168)	(1,134)	(6,552)	(2,992)
Change in financial liability for share warrants		3,830		15,857
Other, net	(4,568)	305	(1,888)	(987)
Other income (expense), net	(8,736)	3,001	(8,440)	11,878
Loss before income taxes	(31,166)	(9,778)	(64,761)	(24,365)
Net loss	(31,166)	(9,778)	(64,761)	(24,365)
Other comprehensive income (loss):
Change in fair value of effective portion of foreign currency cash flow hedges	29	(89)	(310)	120
Foreign currency gain (loss)	(594)	(1,491)	(6,326)	(297)
Provision for pension benefit obligation	46		129	(1,747)
Other comprehensive loss, net	(519)	(1,580)	(6,507)	(1,924)
Comprehensive loss	(31,685)	(11,358)	(71,268)	(26,289)
Net loss available to ordinary shareholders - basic and diluted	$ (31,166)	$ (9,778)	$ (64,761)	$ (24,365)
Loss per share - basic and diluted	$ (1.06)	$ (0.48)	$ (2.34)	$ (1.33)
Weighted-average shares outstanding - basic and diluted	29,508,330	20,398,132	27,689,009	18,284,708