Consolidated Statement of Cash Flows $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Funds (used) provided - Operating activities
Net loss	$ (10,108)	$ (3,051)
Depreciation of tangible assets	719	735
Stock-based compensation	370	315
Accretion expense	396	123
DSU expense	160
Interest paid by issuance of common shares	231
Conversion of convertible debentures	(16)
Total Adjustment	(8,248)	(1,878)
Changes in non-cash items related to operations:
Accounts receivable	(192)	421
Prepaid expenses	(259)	363
Investment tax credits receivable	(102)	(68)
Inventory	(375)
Security deposits	(11)
Accounts payable and accrued liabilities	658	408
Deferred revenue		(3,634)
Deferred lease obligations	(1)	5
Net change in non-cash items related to operations	282	2,505
Net cash used in operating activities	(8,530)	(4,383)
Financing activities
Repayment of long-term debt	(749)	(708)
Proceeds from exercise of warrants and stock options	2,328	1,238
Net proceeds from private placement	4,004
Transaction costs of private placement	(82)
Net proceeds from public offering	11,405
Transaction costs of public offering	(502)
Net proceeds from issuance of convertible debentures		5,469
Convertible debentures issuance costs		(491)
Net cash provided by financing activities	16,404	5,508
Investing activities
Additions to leasehold improvements and equipment	(1,096)	(973)
Acquisitions of short-term investments	(4,273)	(3,952)
Redemptions of short-term investments	3,192	4,718
Net cash used in investing activities	(2,177)	(207)
Increase in cash	5,697	918
Effect of foreign exchange on cash	(473)	61
Cash
Beginning of year	1,591	612
End of year	$ 6,815	$ 1,591