CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES:
Net loss	$ (23,571)	$ (25,177)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,038	3,333
Share-based compensation	1,178	1,347
Amortization of lease incentive	(109)	(108)
Swiss pension obligation	183	155
Amortization of deferred debt issue costs	2,107	291
Accrued preference share dividends	263	263
Deferred income taxes	13	11
Net change in assets and liabilities:
Trade accounts receivable, net	(1,439)	(141)
Inventories	(1,160)	(28)
Accounts payable and accrued liabilities	(3,713)	(5,401)
Accrued compensation and benefits	(1,699)	1,057
Other assets	(145)	3,280
Net cash used in operating activities	(25,054)	(21,118)
INVESTING ACTIVITIES:
Increase in short-term investments	(15,000)
Realization of short-term investments	21,724
Purchase of property and equipment	(1,138)	(1,428)
Net cash generated from (used in) investing activities	5,586	(1,428)
FINANCING ACTIVITIES:
Repayment of finance leases	(94)	(116)
Proceeds from drawdown of new debt	25,000	36,000
Debt issuance costs and fees paid to noteholders	(874)	(1,213)
Proceeds from issuance of ordinary shares and warrants	63	2,195
Net cash generated from financing activities	24,095	36,866
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	(686)	3,304
Change in cash, cash equivalents and restricted cash	3,941	17,624
Beginning cash, cash equivalents and restricted cash	11,603	25,205
Ending cash, cash equivalents and restricted cash	15,544	42,829
Supplemental cash flow disclosures:
Interest paid	7,221	5,069
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	6,528	35,629
Restricted cash	9,016	7,200
Ending cash, cash equivalents and restricted cash	$ 15,544	$ 42,829