Financial Statement Presentation (Tables)

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following table presents revenues disaggregated by product:

	Three Months Ended June 30,					Six Months Ended June 30,
(In thousands)	2018			2017(1)		2018		2017(1)
OPERATING REVENUES
Natural gas	$	364,660		$	395,328	$	776,768	$	828,770
Crude oil and condensate	—			44,625		48,722		87,616
Brokered natural gas	92,576			4,037		97,526		8,732
Other	(121		)	2,662		1,749		5,994
Total revenues from contracts with customers	457,115			446,652		924,765		931,112
Gain (loss) on derivative instruments	(3,668		)	13,805		1,909		47,190
Total operating revenues	$	453,447		$	460,457	$	926,674	$	978,302

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(1) As noted above, prior period amounts have not been adjusted under the modified retrospective method.