Financial Statement Presentation (Tables)

3 Months Ended

Mar. 31, 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 March 31,
(In thousands)	2018		2017(1)
OPERATING REVENUES
Natural gas	$	412,108	$	433,442
Crude oil and condensate	48,722		42,990
Brokered natural gas	4,950		4,695
Other	1,870		3,332
Total revenues from contracts with customers	467,650		484,459
Gain on derivative instruments	5,577		33,384
Total operating revenues	$	473,227	$	517,843

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