CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
OPERATING ACTIVITIES:
Net loss	$ (40,404)	$ (50,561)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and loss on disposal of fixed assets	4,126	6,070
Share-based compensation	2,284	2,179
Increase in deferred lease rentals	346	148
Swiss pension obligation	516	363
Amortization of deferred debt issue costs	4,386	5,041
Accrued preference share dividends	525	525
Income taxes	32	27
Net change in assets and liabilities:
Trade accounts receivable, net	1,093	(1,161)
Inventories	(1,411)	(2,874)
Accounts payable and accrued liabilities	1,896	(63)
Accrued compensation and benefits	(2,215)	(1,764)
Other assets	(1,807)	(648)
Net cash used in operating activities	(30,633)	(42,718)
INVESTING ACTIVITIES:
Increase in short-term investments	(72,247)	(15,000)
Realization of short-term investments	44,016	38,926
Purchase of property and equipment	(2,069)	(2,558)
Net cash (used in) /generated from investing activities	(30,300)	21,368
FINANCING ACTIVITIES:
Repayment of finance leases	(356)	(210)
Proceeds from drawdown of new debt		25,000
Debt issuance costs and fees paid to noteholders		(874)
Proceeds from issuance of ordinary shares and warrants	80,838	377
Net cash generated from financing activities	80,482	24,293
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	(5,333)	277
Change in cash, cash equivalents and restricted cash	14,216	3,220
Beginning cash, cash equivalents and restricted cash	12,940	11,603
Ending cash, cash equivalents and restricted cash	27,156	14,823
Supplemental cash flow disclosures:
Interest paid	8,765	7,239
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	18,125	5,816
Restricted cash	9,031	9,007
Ending cash, cash equivalents and restricted cash	$ 27,156	$ 14,823