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Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2022
Asset Retirement Obligations  
Summary of long-term asset retirement obligations

    

December 31, 

    

December 31, 

2022

2021

Refinery

$

1,790

$

1,336

Ontario Mineral Properties (Note 8)

 

 

338

Long-term Asset Retirement Obligations

$

1,790

$

1,674

Summary of continuity of the asset retirement obligation

    

Total ARO

Balance at January 1, 2021

$

1,264

Change in estimate of discounted cash flows

 

410

Balance at December 31, 2021

 

1,674

Change in estimate from discounting

 

(274)

Change in estimate of costs

 

728

Transferred to liabilities held for sale (Note 8)

 

(338)

Balance at December 31, 2022

$

1,790