Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash used in operating activities
Net loss	$ (32,828)	$ (30,962)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	475	490
Amortization of intangible assets	6,274	6,231
Stock-based compensation	906	1,399
Non-cash interest expense	9,193	7,742
Unrealized foreign exchange gain (loss)	438	(72)
Amortization of debt issuance costs	18	0
Deferred income taxes	6	(29)
Other non-cash operating activities	5	10
Changes in assets and liabilities:
Accounts receivable	6,126	(2,101)
Inventories	(2,255)	5,474
Prepaid expenses and other assets	(2,908)	(488)
Accounts payable	454	(8,871)
Accrued liabilities and other liabilities	(8,635)	(3,657)
Net cash used in operating activities	(22,731)	(24,834)
Cash used in investing activities
Purchases of property and equipment	(208)	(273)
Net cash used in investing activities	(208)	(273)
Cash provided by financing activities
Net proceeds from New Loan, net of debt discount	19,977	0
Issuance of common shares	(3)	134
Payment of new loan issuance costs	(698)	0
Other	0	150
Net cash provided by financing activities	19,276	284
Exchange rate effect on cash	216	652
Net decrease in cash and cash equivalents	(3,447)	(24,171)
Cash and cash equivalents, beginning of period	55,430	108,927
Cash and cash equivalents, end of period	51,983	84,756
Supplemental disclosures of cash flow information
Cash paid for interest	3,262	3,250
Cash paid for taxes	57	570
Non-cash investing activities
Purchases of property and equipment included in accounts payable	$ 113	$ 0