Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Funds (used) provided - Operating activities
Net loss	$ (10,660)	$ (10,108)
Depreciation of tangible assets	718	719
Stock-based compensation	333	370
Accretion expense	514	396
DSU expense	105	160
Interest paid by issuance of common shares	228	231
Lease non-cash expense	8
Conversion of convertible debentures		(16)
Total Adjustment	(8,754)	(8,248)
Changes in non-cash items related to operations:
Accounts receivable	426	(192)
Prepaid expenses	292	(259)
Investment tax credits receivable	41	(102)
Inventory		(375)
Security deposits		(11)
Accounts payable and accrued liabilities	(204)	658
Deferred lease obligations		(1)
Net change in non-cash items related to operations	555	(282)
Net cash used in operating activities	(8,199)	(8,530)
Financing activities
Repayment of long-term debt	(711)	(749)
Proceeds from exercise of warrants and stock options	21	2,328
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 cash (used in) provided by financing activities	(690)	16,404
Investing activities
Additions to leasehold improvements and equipment	(525)	(1,096)
Acquisitions of short-term investments	(1,535)	(4,273)
Redemptions of short-term investments	5,265	3,192
Net cash provided by (used in) investing activities	3,205	(2,177)
(Decrease) Increase in cash	(5,684)	5,697
Effect of foreign exchange on cash	201	(473)
Cash
Beginning of year	6,815	1,591
End of year	$ 1,332	$ 6,815