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Asset retirement obligation
3 Months Ended
Mar. 31, 2026
Asset Retirement Obligation Disclosure [Abstract]  
Asset retirement obligation Asset retirement obligation
The following table summarizes changes in the Company’s Asset retirement obligation (in thousands):
March 31, 2026December 31, 2025
Balance, beginning of period$11,773 $13,151 
Accretion 306 1,297 
Change in estimates— (2,675)
Balance, end of period$12,079 $11,773 
Current$22 $22 
Non-current$12,057 $11,751 
For the three months ended March 31, 2026 and 2025, the Company recognized no asset retirement obligation adjustments resulting from a change in estimate.
The Company does not have mineral reserves, and accordingly, all asset retirement costs are expensed until mineral reserves are established.