Inventories	6 Months Ended
Inventories	Jun. 30, 2026
Inventories [Abstract]
Inventories	6. Inventories (in US$ thousands) June 30, 2026 December 31, 2025 Raw coal $ 20,793 $ 35,006 Saleable coal 103,298 80,174 Total coal inventories 124,091 115,180 Supplies and other inventory 83,653 79,985 Total inventories $ 207,744 $ 195,165 Coal inventories measured at their net realizable value were $ 39.6 million and $ 41.2 million as at June 30, 2026 and December 31, 2025, respectively, and form part of total coal inventories.