Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income (loss)	$ 1,324	$ (1,165)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Change in fair value of derivative financial instruments	(8,289)	(2,525)
Stock-based compensation expense	835	387
Unrealized foreign exchange loss (gain)	176	(993)
Depreciation expense	22	10
Changes in operating assets and liabilities:
Accounts receivable	(740)
Other receivables	(84)	7
Inventory	(339)
Prepaid expenses	95	94
Other current assets	264	(105)
Operating lease liability	(3)
Accounts payable	83	(886)
Accrued liabilities	(144)	316
Net cash used in operating activities	(6,800)	(4,860)
Cash flows from investing activities:
Purchase of property and equipment	(161)	(27)
Net cash used in investing activities	(161)	(27)
Cash flows from financing activities:
Share issuance costs	(52)	(73)
Proceeds from the exercise of stock options and warrants	92	3,753
Net cash provided by financing activities	40	3,680
Effect of foreign exchange rate changes on cash	(6)	40
Net decrease in cash	(6,927)	(1,167)
Cash at beginning of period	25,583	5,562
Cash at end of period	$ 18,656	$ 4,395

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