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LEASES - Right-of-use assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Carrying amounts of right-of-use assets    
Balance, beginning of year $ 134,022 $ 112,715
Additions and modifications, net of disposals 59,598 41,024
Amortization of right-of-use assets (27,912) (19,717)
Balance, end of year 165,708 $ 134,022
Kirkland Lake    
Carrying amounts of right-of-use assets    
Additions and modifications, net of disposals $ 23,200