CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES:
Net loss	$ (78,792)	$ (62,240)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	9,503	7,678
Share-based compensation	3,576	3,458
Increase in (amortization of) deferred lease rental benefit	266	(324)
Swiss pension obligation	453	494
Amortization of deferred debt issue costs	4,097	3,383
Accrued preference share dividends	788	788
Deferred income taxes	33
Net change in assets and liabilities:
Trade accounts receivable, net	315	681
Inventories	147	(2,347)
Accounts payable and accrued liabilities	(5,076)	(4,066)
Accrued compensation and benefits	(664)	(886)
Other assets	3,833	456
Net cash used in operating activities	(61,521)	(52,925)
INVESTING ACTIVITIES:
Increase in short-term investments	(119,000)	(78,000)
Realization of short-term investments	21,883	66,403
Purchase of property and equipment	(3,047)	(17,343)
Purchase of intangible assets	(3)	(68)
Net cash used in investing activities	(100,167)	(29,008)
FINANCING ACTIVITIES:
Repayment of finance leases	(358)	(135)
Proceeds from drawdown of new debt	36,000
Debt issuance costs and fees paid to noteholders	(5,113)
Proceeds from issuance of ordinary shares and warrants	113,745	84,985
Net cash generated from financing activities	144,274	84,850
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	4,187	(1,521)
Change in cash, cash equivalents and restricted cash	(13,227)	1,396
Beginning cash, cash equivalents and restricted cash	25,205	9,794
Ending cash, cash equivalents and restricted cash	11,978	11,190
Supplemental cash flow disclosures:
Interest paid	11,435	5,068
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	4,468	6,150
Restricted cash	7,510	5,040
Ending cash, cash equivalents and restricted cash	$ 11,978	$ 11,190