CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss	$ (19,826)	$ (21,866)
Reconciliation of net loss to net cash (used in) provided by operating activities:
Depreciation of fixed assets and leases	2,700	1,703
Provision for bad debt	(97)	601
Provision for write down of inventory	(295)	844
Issuance of stock to consultant	0	102
Stock based compensation	896	1,572
Amortization of debt costs and debt discount	4,657	7,080
Amortization of intangible assets	2,260	2,302
Non cash lease expense	308	0
Foreign currency exchange loss	2,458	2,071
Partial extinguishment of Convertible 3.75% Senior Notes	185	2,467
Gain on sale of fixed assets	0	(20)
Loss on impairment of intangible assets	0	22
Non cash interest expense	6,359	0
Changes in operating assets and liabilities:
Accounts receivable	(4,018)	(4,587)
Inventories	(5,970)	(2,746)
Prepaid expenses, other current receivables and assets	1,666	2,085
Accounts payable and accrued expenses	2,747	(6,944)
Operating liabilities	(265)	0
Deferred income	(2,426)	0
Net cash used in operating activities	(8,661)	(15,314)
Cash flows from investing activities:
Capital expenditures	(6,082)	(18,315)
Proceeds from sale of fixed assets	0	38
Net cash used in investing activities	(6,082)	(18,277)
Cash flows from financing activities:
Proceeds from exercise of common stock options	0	246
Proceeds from Revolver	12,500	0
Proceeds from 2021 Term Loan	0	25,000
Debt issuance costs	(269)	(2,539)
Repurchase of 3.75% senior notes	(2,686)	0
Principal paid on lease obligation	(9)	0
Net cash provided by financing activities	9,536	22,707
Effect of exchange rate on cash and cash equivalents	(481)	(542)
Net decrease in cash, cash equivalents and restricted cash	(5,207)	(10,884)
Cash, cash equivalents and restricted cash at beginning of period	13,069	27,165
Cash, cash equivalents and restricted cash at end of period	7,381	15,739
Supplemental Cash flow information:
Cash payments for interest	3,211	3,136
Cash payments for income taxes	68	66
Non-cash operating, investing and financing transactions:
Issuance of stock to a consultant	0	102
Acquisition of capital expenditures in accounts payable and accrued expenses	938	1,316
Capitalized interest in capital expenditures	0	2,013
Capitalized stock compensation in capital expenditures	$ 23	$ 82