CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES:
Net loss	$ (78,046)	$ (78,792)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	8,996	9,503
Share-based compensation	3,375	3,576
Increase in deferred lease rentals	215	266
Swiss pension obligation	551	453
Amortization of deferred debt issue costs	7,736	4,097
Accrued preference share dividends	788	788
Deferred income taxes	41	33
Net change in assets and liabilities:
Trade accounts receivable, net	(1,638)	315
Inventories	(3,838)	147
Accounts payable and accrued liabilities	(2,268)	(5,076)
Accrued compensation and benefits	(268)	(664)
Other assets	(406)	3,833
Net cash used in operating activities	(64,762)	(61,521)
INVESTING ACTIVITIES:
Increase in short-term investments	(95,000)	(119,000)
Realization of short-term investments	52,700	21,883
Purchase of property and equipment	(3,941)	(3,047)
Purchase of intangible assets		(3)
Net cash used in investing activities	(46,241)	(100,167)
FINANCING ACTIVITIES:
Repayment of finance leases	(337)	(358)
Proceeds from drawdown of new debt	25,000	36,000
Debt issuance costs and fees paid to noteholders	(874)	(5,113)
Proceeds from issuance of ordinary shares and warrants	90,728	113,745
Net cash generated from financing activities	114,517	144,274
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	(1,438)	4,187
Change in cash, cash equivalents and restricted cash	2,076	(13,227)
Beginning cash, cash equivalents and restricted cash	11,603	25,205
Ending cash, cash equivalents and restricted cash	13,679	11,978
Supplemental cash flow disclosures:
Interest paid	15,959	11,435
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	4,664	4,468
Restricted cash	9,015	7,510
Ending cash, cash equivalents and restricted cash	$ 13,679	$ 11,978