v3.26.1
Asset retirement obligation - Schedule of Changes in ARO (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Balance, beginning of period   $ 11,773 $ 13,151
Accretion   612 1,297
Change in estimates $ 5,700 5,736 2,675
Balance, end of period 6,649 6,649 11,773
Current 0 0 22
Non-current $ 6,649 $ 6,649 $ 11,751