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CONSOLIDATED STATEMENTS OF CASH FLOWS - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Operating Activities      
Net loss for the year $ (24,835) $ (26,304) $ (22,505)
Depreciation - property and equipment (notes 6, 19) 93 130 89
Depreciation - right-of-use assets (notes 8, 19) 299 322 357
Share-based compensation expense (notes 10, 19, 20) 2,378 3,826 2,559
Interest (income) expense, net (76) 92 69
Unrealized foreign exchange (gain) loss (1,625) 426 645
Change in fair value of warrant derivative (note 16) 20 (17) (3,492)
Net change in non-cash working capital (note 17) 391 (908) 210
Cash used in operating activities (23,355) (22,433) (22,068)
Investing Activities      
Acquisition of marketable securities (20,348) 0 0
Acquisition of property and equipment (note 6) (55) (286) (29)
Cash used in investing activities (20,403) (286) (29)
Financing Activities      
Proceeds from exercise of stock options (note 10) 12 238 241
Payment of lease liabilities (note 8) (381) (366) (461)
Cash provided by financing activities 12,205 33,015 39,773
(Decrease) increase in cash and cash equivalents (31,553) 10,296 17,676
Cash and cash equivalents, beginning of year 41,262 31,220 14,148
Impact of foreign exchange on cash and cash equivalents 1,957 (254) (604)
Cash and cash equivalents, end of year 11,666 41,262 31,220
Warrant Derivative and Shares Under Warrant Agreement      
Financing Activities      
Proceeds from share issuance 0 231 1,697
At-the-market agreement      
Financing Activities      
Proceeds from share issuance $ 12,574 $ 32,912 $ 38,296