CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Revenue:
Product sales	$ 6,226	$ 5,717
Other revenues	600
Total revenue	6,826	5,717
Cost of revenue	(2,832)	(3,091)
Gross profit	3,994	2,626
Operating expenses:
Sales and marketing	(1,682)	(1,257)
Research and development, net of government grants	(12,673)	(11,801)
General and administrative expense:
Compensation expense in respect of share options and management equity incentives	(1,285)	(898)
Other general and administrative expenses	(5,260)	(5,048)
Total general and administrative expense	(6,545)	(5,946)
Total operating expense	(20,900)	(19,004)
Operating loss	(16,906)	(16,378)
Other income (expense):
Interest expense, net	(4,210)	(1,171)
Other, net	880	1,314
Other income (expense), net	(3,330)	143
Loss before income taxes	(20,236)	(16,235)
Net loss	(20,236)	(16,235)
Other comprehensive income (loss):
Change in fair value of effective portion of foreign currency cash flow hedges	345	(263)
Unrealized gain on short-term investments	38
Foreign currency gain (loss)	1,815	(3,308)
Provision for pension benefit obligation	43	41
Other comprehensive income (loss), net	2,241	(3,530)
Comprehensive loss	(17,995)	(19,765)
Net loss available to ordinary shareholders - basic and diluted	$ (20,236)	$ (16,235)
Loss per share - basic and diluted	$ (0.55)	$ (0.64)
Weighted-average shares outstanding - basic and diluted	36,767,544	25,410,598