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Accrued Expenses and Other Current Liabilities (Tables)	9 Months Ended
Accrued Expenses and Other Current Liabilities (Tables)	Sep. 30, 2022
Accrued Expenses and Other Current Liabilities [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	(in US$ thousands) September 30, 2022 December 31, 2021 Wages and employee benefits $ 42,038 $ 41,187 Taxes other than income taxes 8,825 6,246 Accrued royalties 165,636 70,237 Accrued freight costs 36,962 27,754 Accrued mining fees 73,712 65,835 Acquisition related accruals 27,959 31,201 Other liabilities 50,972 28,482 Total accrued expenses and other current liabilities $ 406,104 $ 270,942