Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash used in operating activities
Net loss	$ (88,898)	$ (102,142)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,339	1,452
Amortization of intangible assets	18,822	18,778
Stock-based compensation	2,461	3,419
Non-cash interest expense	29,504	24,205
Provision for inventory excess and obsolescence	213	18,859
Unrealized foreign exchange loss (gain)	2,705	(195)
Amortization of debt issuance costs	235	0
Deferred income taxes	946	106
Other non-cash operating activities	(7)	16
(Gain) loss on change in fair value of embedded derivative liability	(606)	0
Changes in assets and liabilities:
Accounts receivable	562	(5,177)
Inventories	(1,776)	1
Prepaid expenses and other assets	(4,038)	757
Accounts payable	(2,999)	(1,887)
Accrued liabilities and other liabilities	(4,720)	2,704
Net cash used in operating activities	(46,257)	(39,104)
Cash used in investing activities
Purchases of property and equipment	(435)	(723)
Net cash used in investing activities	(435)	(723)
Cash provided by financing activities
Net proceeds from term loan, net of debt discount	19,977	0
Issuance of common shares	409	174
Payment of term loan issuance costs	(698)	0
Net cash provided by financing activities	19,688	174
Exchange rate effect on cash	(1,048)	1,227
Net decrease in cash and cash equivalents	(28,052)	(38,426)
Cash and cash equivalents, beginning of period	55,430	108,927
Cash and cash equivalents, end of period	27,378	70,501
Supplemental disclosures of cash flow information
Cash paid for interest	6,823	3,250
Cash paid for taxes, net	2	1,386
Non-cash investing activities
Purchases of property and equipment included in accounts payable	$ 12	$ 22