CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (21,866)	$ (9,070)
Reconciliation of net loss to net cash used in operating activities
Depreciation and amortization of fixed assets	1,703	1,264
Provision for bad debt expense	601	1,738
Provision for write down of inventory	844	1,489
Issuance of stock to consulant	102	0
Stock based compensation	1,572	2,427
Amortization of debt issuance costs	727	695
Amortization of intangible assets	2,302	2,143
Foreign currency exchange loss (gain)	2,071	(6,645)
Partial extinguishment of Convertible 3.75% Senior Notes	2,467	0
Amortization of debt discount	6,353	6,376
Gain on sale of fixed assets	(20)	0
Loss on impairment of intangible assets	22	113
Changes in operating assets and liabilities
Accounts receivable	(4,587)	(2,491)
Inventories	(2,746)	(2,767)
Prepaid expenses and other current receivables	2,081	510
Other assets	4	21
Accounts payable and accrued expenses	(6,944)	1,537
Net cash used in operating activities	(15,314)	(2,660)
Cash flows from investing activities:
Capital expenditures	(18,315)	(26,002)
Proceeds from sale of fixed assets	38	0
Net cash used in investing activities	(18,277)	(26,002)
Cash flows from financing activities:
Proceeds from exercise of common stock options	246	269
Proceeds from 2021 Term Loan	25,000	0
Debt fees on Convertible 4.75% Senior Notes and 2021 Term Loan	(2,539)	0
Net cash provided by financing activities	22,707	269
Effect of exchange rate on cash and cash equivalents	(542)	618
Net decrease in cash, cash equivalents and restricted cash	(10,884)	(28,393)
Cash, cash equivalents and restricted cash at beginning of period	27,165	66,481
Cash, cash equivalents and restricted cash at end of period	15,739	38,706
Supplemental Cash flow information:
Cash payments for interest	3,136	2,695
Cash payments for income taxes	66	102
Non-cash operating, investing and financing transactions:
Acquisition of capital expenditures in accounts payable and accrued expenses	1,316	5,029
Issuance of stock to a consultant	102	0
Capitalized interest in capital expenditures	2,013	1,058
Capitalized stock compensation in capital expenditures	$ 82	$ 101