Accounts Receivable (Details 1) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts and Financing Receivable, after Allowance for Credit Loss [Abstract]
Receivable from contracts with customers, less estimated credit losses	$ 485,229	$ 595,321
Other receivables	29,335	28,895
Accounts receivable, net	514,564	624,216
Estimated credit losses	$ 15,127	$ 14,276