CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES:
Net loss	$ (64,761)	$ (24,365)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	7,029	1,573
Share-based compensation	3,089	1,380
Amortization of lease incentive	(323)	(327)
Swiss pension obligation	489
Amortization of deferred debt issue costs	6,096	1,250
Accrued preference share dividends	788	788
Change in financial liability for share warrants		(15,857)
Net change in assets and liabilities:
Trade accounts receivable, net	246	307
Inventories	(1,310)	(3,249)
Accounts payable and accrued liabilities	6,660	(2,675)
Accrued compensation and benefits	(85)	(803)
Other assets	(700)	(725)
Net cash used in operating activities	(42,782)	(42,703)
INVESTING ACTIVITIES:
Increase in short-term investments	(30,009)
Purchase of property and equipment	(15,206)	(19,832)
Purchase of intangible assets	(65)	(64)
Net cash used in investing activities	(45,280)	(19,896)
FINANCING ACTIVITIES:
Proceeds from (repayment of) finance leases	(108)	55
Proceeds from drawdown of new debt	84,000	15,500
Issue costs of new debt	(5,493)	(703)
Repayment of debt	(33,450)	(500)
Proceeds from issuance of ordinary shares	16,374	34,553
Net cash generated from financing activities	61,323	48,905
Effect of exchange rate fluctuations on cash and cash equivalents	(3,033)	230
Change in cash and cash equivalents	(29,772)	(13,464)
Beginning cash and cash equivalents	44,100	37,525
Ending cash and cash equivalents	14,328	24,061
Supplemental cash flow disclosures:
Interest paid	$ 1,687	$ 1,463