Accounts Receivable (Details 1) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts and Financing Receivable, after Allowance for Credit Loss [Abstract]
Receivable from contracts with customers, less estimated credit losses	$ 430,642	$ 595,321
Other receivables	21,589	28,895
Accounts receivable, net	452,231	624,216
Estimated credit losses	$ 19,424	$ 14,276