Accounts and Other Receivables - Allowance for Doubtful Accounts Related to Accounts Receivable (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning of period	$ 86,886	$ 70,890
Provision for credit losses	8,521	139,000
Write-offs	(14,878)	(119,210)
Recoveries	9,956	5,443
Impact of foreign currency	1,615	(7,759)
Allowance for credit losses end of period	$ 92,100	$ 88,364