Accounts Receivable from Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Accounts Receivable [Line Items]
Accounts receivable from contracts with customers	$ 143,311	$ 184,732
Oil, gas, and NGL production revenue [Member]
Accounts Receivable [Line Items]
Accounts receivable from contracts with customers	$ 62,000	$ 146,300
Minimum [Member]
Accounts Receivable [Line Items]
Revenue Receipt, Days After Sale	30
Maximum [Member]
Accounts Receivable [Line Items]
Revenue Receipt, Days After Sale	90