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Reclamation (Tables)
12 Months Ended
Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligation
Year Ended December 31,
In thousands20222021
Asset retirement obligation - Beginning$181,888 $139,274 
Accretion14,232 11,988 
Additions and changes in estimates13,001 34,927 
Disposition of Sterling/Crown exploration properties(1,840)— 
Settlements(4,850)(4,301)
Asset retirement obligation - Ending$202,431 $181,888