Inventories	3 Months Ended
Inventories	Mar. 31, 2026
Inventories [Abstract]
Inventories	5. Inventories (in US$ thousands) March 31, 2026 December 31, 2025 Raw coal $ 27,820 $ 35,006 Saleable coal 52,984 80,174 Total coal inventories 80,804 115,180 Supplies and other inventory 82,601 79,985 Total inventories $ 163,405 $ 195,165 Coal inventories measured at their net realizable value were $ 37.4 million and $ 41.2 million as at March 31, 2026 and December 31, 2025, respectively, and form part of total coal inventories.