Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table presents revenues disaggregated by product:

	Three Months Ended March 31,
(In thousands)	2019		2018
OPERATING REVENUES
Natural gas	$	633,174	$	412,108
Crude oil and condensate	—		48,722
Brokered natural gas	—		4,950
Other	250		1,870
Total revenues from contracts with customers	633,424		467,650
Gain on derivative instruments	8,257		5,577
Total operating revenues	$	641,681	$	473,227