Accounts Receivable (Details 1) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accounts and Financing Receivable, after Allowance for Credit Loss [Abstract]
Receivable from contracts with customers, less estimated credit losses	$ 458,562	$ 595,321
Other receivables	15,694	28,895
Accounts receivable, net	474,256	624,216
Estimated credit losses	$ 19,905	$ 14,276