Accrued Expenses and Other Current Liabilities	3 Months Ended
Accrued Expenses and Other Current Liabilities	Mar. 31, 2026
Accrued Expenses and Other Current Liabilities [Abstract]
Accrued Expenses and Other Current Liabilities	8. Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following: (in US$ thousands) March 31, 2026 December 31, 2025 Wages and employee benefits $ 46,023 $ 42,652 Taxes other than income taxes 8,177 6,440 Accrued royalties 8,634 37,818 Accrued freight costs 38,806 40,964 Accrued mining fees 99,834 132,754 Other liabilities 55 15,404 Total accrued expenses and other current liabilities $ 201,529 $ 276,032