CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net loss	$ (10,713)	$ (41,168)
Reconciliation of net loss to net cash (used in) provided by operating activities:
Depreciation of fixed assets and leases	363	1,972
Provision for bad debt	295	236
Provision for write down of inventory	759	1,931
Stock based compensation	210	658
(Accretion) amortization of debt costs and debt discount/premium	(365)	3,871
Amortization of intangible assets	1,195	1,368
Non cash lease expense	173	209
Foreign currency exchange (gain)/loss	1,307	(528)
Loss on impairment of intangible assets	24	8,373
Non cash interest expense	6,223	6,171
Gain on debt restructuring	(22,439)	0
Inducement loss	1,889	0
Change in the fair value of derivative liabilities	3,186	5,849
Changes in operating assets and liabilities:
Accounts receivable	1,165	6,510
Inventories	5,732	(11,130)
Prepaid expenses, other current receivables, and assets	1,385	294
Accounts payable and accrued expenses	(8,156)	4,447
Operating liabilities	(216)	(206)
Customer deposits	568	0
Net cash used in operating activities	(17,415)	(11,143)
Cash flows from investing activities:
Capital expenditures	(229)	(2,369)
Net cash used in investing activities	(229)	(2,369)
Cash flows from financing activities:
Proceeds from Term Loan 2023	1,465	0
Proceeds from ATM	36,920	0
Debt issuance costs	(3,986)	0
Government grant advance	0	3,378
Principal paid on lease obligation	(7)	(7)
Net cash provided by financing activities	34,392	3,371
Effect of exchange rate on cash and cash equivalents	(68)	484
Net increase (decrease) in cash, cash equivalents and restricted cash	16,680	(9,657)
Cash, cash equivalents and restricted cash at beginning of period	6,712	16,182
Cash, cash equivalents and restricted cash at end of period	23,392	6,525
Supplemental Cash flow information:
Cash payments for interest	883	2,352
Cash payments for income taxes	61	34
Non-cash operating, investing and financing transactions:
Acquisition of capital expenditures in accounts payable and accrued expenses	46	215
Capitalized stock compensation in capital expenditures	0	9
Issuance of Series D preferred stock	$ 15,374	$ 0