Accounts Receivable - Schedule of Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 434,295	$ 414,891
Less: Allowance for expected credit losses	(8,398)	(7,501)
Trade accounts receivable, net	425,897	407,390
Other receivables	$ 39,454	$ 34,253