XML 115 R70.htm IDEA: XBRL DOCUMENT v3.23.1
Asset Retirement Obligations - Additional Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2022
CAD ($)
Asset Retirement Obligations  
Estimated cost of closure $ 3,614
Surety bond as financial assurance $ 3,450
Keeley-Frontier patents  
Asset Retirement Obligations  
Ownership interest 50.00%