v3.25.4
Segment Information (Reportable Segment Results) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Reportable segment results      
Total revenues $ 1,949,787 $ 2,507,713 $ 2,890,603
Mining costs (1,517,539) (1,683,308) (1,669,523)
Other operating costs (539,334) (679,604) (804,222)
Total operating costs (2,056,873) (2,362,912) (2,473,745)
Other and unallocated items (37,081) (29,661) (35,146)
Adjusted EBITDA (144,167) 115,140 381,713
Total assets 2,625,555 2,517,752 2,678,038
Capital expenditures 290,804 249,871 227,758
Operating Segments [Member]      
Reportable segment results      
Capital expenditures 290,804 249,871 227,758
Other and Corporate [Member]      
Reportable segment results      
Total revenues 0 0 0
Mining costs 0 0 0
Other operating costs 0 0 0
Total operating costs 0 0 0
Other and unallocated items (39,257) (35,494) (41,629)
Adjusted EBITDA (39,257) (35,494) (41,629)
Total assets 195,695 255,732 345,229
Capital expenditures 5,342 4,127 660
Australia Segment [Member] | Operating Segments [Member]      
Reportable segment results      
Total revenues 1,185,298 1,594,981 1,681,522
Mining costs (932,030) (1,054,066) (1,058,598)
Other operating costs (412,869) (538,365) (621,356)
Total operating costs (1,344,899) (1,592,431) (1,679,954)
Other and unallocated items 2,215 851 680
Adjusted EBITDA (157,386) 3,401 2,249
Total assets 1,354,590 1,213,903 1,322,610
Capital expenditures 148,842 89,343 55,412
United States Segment [Member] | Operating Segments [Member]      
Reportable segment results      
Total revenues 764,489 912,732 1,209,081
Mining costs (585,509) (629,242) (610,925)
Other operating costs (126,465) (141,239) (182,866)
Total operating costs (711,974) (770,481) (793,791)
Other and unallocated items (39) 4,982 5,803
Adjusted EBITDA 52,476 147,233 421,093
Total assets 1,075,270 1,048,117 1,010,199
Capital expenditures $ 136,620 $ 156,401 $ 171,686