CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (122,022,000)	$ (25,124,000)
Reconciliation of net loss to net cash (used in) provided by operating activities:
Depreciation of fixed assets and leases	3,840,000	3,688,000
Write down of fixed assets	398,000	0
Provision for write down of inventory	9,775,000	(459,000)
Provision for bad debt expense	192,000	(428,000)
Stock based compensation	754,000	1,076,000
Amortization of debt costs and debt discount	7,810,000	6,514,000
Amortization of intangibles	2,709,000	3,008,000
Right-of-use asset lease expense	459,000	408,000
Deferred income taxes	(27,000)	(22,000)
Foreign currency exchange (gain) loss	(4,961,000)	1,523,000
Extinguishment of prior term loan	0	185,000
Non cash interest expense	18,484,000	8,464,000
Impairment of long-lived assets	101,533,000	0
(Gain)/loss on debt restructuring	(51,858,000)	920,000
Inducement loss	9,183,000	0
Change in the fair value of derivative liability	2,305,000	(6,769,000)
Changes in operating assets and liabilities:
Accounts receivable	9,003,000	(3,655,000)
Inventories, net	(9,792,000)	(6,145,000)
Prepaid expenses and other current receivables	(968,000)	815,000
Accounts payable and accrued expenses	4,541,000	377,000
Operating liabilities	1,874,000	(369,000)
Deferred income	0	(2,426,000)
Net cash used in operating activities	(16,768,000)	(18,419,000)
Cash flows from investing activities:
Capital expenditures	(4,034,000)	(8,203,000)
Disposal of fixed assets	139,000	0
Net cash used in investing activities	(3,895,000)	(8,203,000)
Cash flows from financing activities:
Proceeds from term loan	0	10,000,000
Proceeds from 2023 Series B bifurcated conversion option	0	11,525,000
Proceeds from revolver	0	12,500,000
Repayment of revolver	0	(2,500,000)
Repayment of 3.75% senior notes	0	(13,022,000)
Debt issuance costs	(3,063,000)	(3,107,000)
Repurchase of 3.75% senior notes	0	(2,686,000)
Government grant advance	3,378,000	0
Principal payments on financing lease obligations	(14,000)	(11,000)
Net cash provided by financing activities	8,952,000	30,449,000
Effect of exchange rate on cash, cash equivalents and restricted cash	2,241,000	(714,000)
Net (decrease) increase in cash, cash equivalents and restricted cash	(9,470,000)
Net (decrease) increase in cash, cash equivalents and restricted cash		3,827,000
Cash, cash equivalents and restricted cash at beginning of year	16,182,000	13,069,000
Cash, cash equivalents and restricted cash at end of year	6,712,000	16,182,000
Supplemental Cash flow information:
Cash payments for interest	3,267,000	5,633,000
Cash payments for income taxes	157,000	150,000
Non cash investing and financing transactions:
Acquisition of capital expenditures in accounts payable and accrued expenses	110,000	46,000
Capitalized stock compensation in capital expenditures	12,000	28,000
Other Noncash Income	(3,349,000)	0
2023 Series B Convertible Notes
Cash flows from financing activities:
Proceeds from senior notes	0	17,750,000
2023 Series C Convertible Notes
Cash flows from financing activities:
Proceeds from senior notes	$ 12,000,000	$ 0