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Share-based compensation and warrant reserve (Tables)
12 Months Ended
Dec. 31, 2023
Disclosure Of Share Option And Warrant Reserves [Abstract]  
Disclosure of share based compensation expense [Table Text Block]
  Years ended December 31  
    2023     2022     2021  
Recognized in net loss (earnings) and included in:                  
Exploration and evaluation costs $ 477   $ 481   $ 473  
Fees, salaries and other employee benefits   874     1,188     1,573  
Total share-based compensation expense $ 1,351   $ 1,669   $ 2,046  
Disclosure of detailed information about options, valuation assumptions [Table Text Block]
Years ended December 31  
    2023     2022     2021  
Risk-free interest rate   3.06%     2.20%     0.91%  
Expected dividend yield   Nil     Nil     Nil  
Share price volatility   68%     67%     67%  
Expected forfeiture rate   4.7%     2.5%     0%  
Expected life in years   5.0     5.0     4.90  
Disclosure of share options issued and outstanding and the weighted average exercise price [Table Text Block]
   

Number of

share options

   

Weighted

average

exercise price

($/option)

 
Outstanding, December 31, 2020   8,141,004   $ 2.67  
Granted   1,405,000     1.03  
Exercised   (5,834 )   0.86  
Expired   (1,685,048 )   3.62  
Forfeited   (1,103,125 )   2.04  
Outstanding, December 31, 2021   6,751,997   $ 2.00  
Granted   3,430,000     1.00  
Expired   (608,237 )   4.65  
Forfeited   (693,436 )   1.77  
Outstanding, December 31, 2022   8,880,324   $ 1.44  
Granted   3,134,800     0.80  
Expired   (1,672,087 )   1.58  
Forfeited   (391,435 )   0.95  
Outstanding, December 31, 2023   9,951,602   $ 1.23  
Disclosure of number of RSUs issued and outstanding and weighted average exercise price [Table Text Block]
   

Number of
RSU's

   

Weighted

average

vesting price

($/ share)

 
Outstanding, December 31, 2020, 2021 and 2022   -   $ -  
Granted   197,345     0.60  
Settled   (197,345 )   (0.60 )
Outstanding, December 31, 2023   -   $ -  
Disclosure of Share option outstanding [Table Text Block]
  Options outstanding Options exercisable

Exercise

price

($/option)

Number of

shares

Weighted

average

exercise price

($/option)

Weighted

average

remaining life

(years)

Number of

shares

Weighted

average

exercise price

($/option)

Weighted

average

remaining life

(years)

$0.56 - $1.00 6,922,993 0.91 3.46 5,647,193 0.93 3.31
$1.00 - $1.95 893,609 1.79 1.19 893,609 1.79 1.19
$2.05 2,135,000 2.05 1.81 2,135,000 2.05 1.81
  9,951,602 1.23 2.90 8,675,802 1.30 2.72
Disclosure number of share purchase warrants outstanding [Table Text Block]
   

Warrants

outstanding

   

Exercise

price

($/share)

 
Outstanding at December 31, 2020   1,626,740   $ 1.66  
Issued   7,461,450     1.20  
Exercised   (101,042 )   1.46  
Expired   (775,695 )   1.42  
Outstanding at December 31, 2021   8,211,453   $ 1.27  
Expired during 2022   (750,003 )   1.95  
Outstanding at December 31, 2022 and 2023   7,461,450   $ 1.20  
Disclosure of warrants issued and outstanding [Table Text Block]
Expiry date  

Warrants

outstanding

   

Exercise

price

($/share)

 
October 6, 2024   5,085,670     1.20  
October 12, 2024   2,375,780     1.20  
Total   7,461,450     1.20